Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

eAnthonyR Group Title

The diagonals of a square each measure 7 feet. Find the are of the square

  • 2 years ago
  • 2 years ago

  • This Question is Closed
  1. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @Loujoelou

    • 2 years ago
  2. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1345312296169:dw| Use pythagoras theorem \(a^2+a^2=7^2\) \(2a^2=49\) Area=\(a^2\) find \(a^2\) from \(2a^2=49\)

    • 2 years ago
  3. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So 2a=49 and then divide both sides eright?

    • 2 years ago
  4. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    or just leave thats cool too lol

    • 2 years ago
  5. ajprincess Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ya divide by 2 to find a^2

    • 2 years ago
  6. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    divide the diagonal by \(\sqrt{2}\) to get the length of the side, then square the result

    • 2 years ago
  7. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ok gotchu Next question. Two sqaure are similar. The ratio of a set of sides is 2:4. whatis the ratio of their area?

    • 2 years ago
  8. satellite73 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    if you call the diagonal \(d\) then the length of the side is \(\frac{d}{\sqrt{2}}\) and area is \(\frac{d^2}{2}\)

    • 2 years ago
  9. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ok gotchu Next question. Two sqaure are similar. The ratio of a set of sides is 2:4. whatis the ratio of their area?

    • 2 years ago
  10. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1345313796722:dw| This is what the information gives us so far. It splits our square into 2 triangles and we can do pythageoren theorem what the sides are. A^2+B^2=7^2. is the formula for the pythageroen theorem. A^2+B^2=49. We simplified this here. They are both the same thing however because the sides of a square are equal so we really have 2A^2=49. We divide both sides by 2, and get A^2=24.5 Now we have to do the opposite of squaring, and that's square root. Now we have A^2= \[\sqrt{24.5} \] This is one side of the square, and we would do \[\sqrt{24.5}*\sqrt{24.5}\] to get our area of this square

    • 2 years ago
  11. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Lol i got the answer xD thanks man :) Next question Two sqaure are similar. The ratio of a set of sides is 2:4. whatis the ratio of their area?

    • 2 years ago
  12. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    |dw:1345314609037:dw| with the info. above, that's what we get and for the first square, let's find the area. Area= 2*2; Area=4. So that means for our 1st square we have an area of 4. Now we do the same for the 2nd square, we do Area= 4*4; Area=16. That means the area of both squares is 4 & 16. We put this into a ratio, and we have 4:16, which can be simplified to 1:4 if needed.

    • 2 years ago
  13. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    lol wow haha i wanted to make another question so i could give you another medal haha

    • 2 years ago
  14. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Lol medals don't really matter that much to me. :) I enjoy helping others a lot more :D

    • 2 years ago
  15. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    hah ok so we will stay here <3

    • 2 years ago
  16. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @Loujoelou

    • 2 years ago
  17. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    sure no prob. :)

    • 2 years ago
  18. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    There you goo @Loujoelou

    • 2 years ago
    1 Attachment
  19. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    if your yhere haha

    • 2 years ago
  20. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm still here. :) Give me a bit of time to solve :D

    • 2 years ago
  21. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    ok :)

    • 2 years ago
  22. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    K. so yeah that's the square and you labelled it corretly :). We would do the same thing as we would with regular numbers, and we will multiply (2x+10)(4), and that would give us 8x+40=80. Do you know how to do the rest? :)

    • 2 years ago
  23. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    8x+40=80 -40 -40 8x=40 x=5<3

    • 2 years ago
  24. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    am i right?

    • 2 years ago
  25. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep good job!! :)

    • 2 years ago
  26. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    and if you wanted to double check this problem, you would put x back into the probolv e. 5 and solve. (2(5)+10)=20, and 20*4=80 so this would be correct :)

    • 2 years ago
  27. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    problem as*

    • 2 years ago
  28. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    iight hold on i have to right the next one again <3

    • 2 years ago
  29. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    K and hey you got nice handwriting.

    • 2 years ago
  30. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    haha ik all the girls love it <3

    • 2 years ago
  31. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    • 2 years ago
    1 Attachment
  32. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    K :) All you would do here, is find the area of the bigger rectangle first. 200*140=28000. Now we find the area of the pool. 30*15=450. Finally all we do is subtract them, 28000-450=answer ft.^2

    • 2 years ago
  33. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Thank you soo Much <3

    • 2 years ago
  34. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Let me plug in the answers into my hw brb give me a minute

    • 2 years ago
  35. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    No prob. :) and okay :)

    • 2 years ago
  36. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So the answer is 27,550ft^2?

    • 2 years ago
  37. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yeah :)

    • 2 years ago
  38. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Thank you :) hold on i have to look for another Hw page

    • 2 years ago
  39. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    do you do virtual school o.O?

    • 2 years ago
  40. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    yes hahah

    • 2 years ago
  41. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Find the area of a rhombus with diagonals of 4ft and 5ft . :) But im done wit virtual school im doing hw now

    • 2 years ago
  42. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @Loujoelou

    • 2 years ago
  43. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Oh okay I do some virtual school as well :)

    • 2 years ago
  44. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    cools xD

    • 2 years ago
  45. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Find the area of a rhombus with diagonals of 4ft and 5ft . :)

    • 2 years ago
  46. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    if ur there xD

    • 2 years ago
  47. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    K so all we do is D1*D2/2=Area. D1=Diagonal 1 & D2= Diagonal 2

    • 2 years ago
  48. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    4*5/2=your answer :)

    • 2 years ago
  49. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    so 4*5 =20/2=10 xD right?

    • 2 years ago
  50. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep :)

    • 2 years ago
  51. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Hahah Yeahhh xD Find the base of the parallelogram that has an area of 228meters squared and has a hheight of 12meters

    • 2 years ago
  52. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    BRB GIVE ME A COUPLE OF mINUTES OK <3

    • 2 years ago
  53. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    K :)

    • 2 years ago
  54. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    @eAnthonyR

    • 2 years ago
  55. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    YAYYYY xD ahah :p

    • 2 years ago
  56. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Find the base of the parallelogram that has an area of 228meters squared and has a hheight of 12meters If you dont mind xD

    • 2 years ago
  57. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    K so the formula of a parallelogram is Area=Base*Height. From the info above, we got 228=b*12. Can you find the base now? :)

    • 2 years ago
  58. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Divide right :)?

    • 2 years ago
  59. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yep. divide 12 on both sides and get b=228/12

    • 2 years ago
  60. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Find the missing diagonal of the rhombus that has an area of 12 feet sqaures and one diagonal of 6ft. If you may can you explain this one to me so i can understand alittle bit

    • 2 years ago
  61. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    K. To find the area of a rhombus we do D1+D2/2=Area. The D1/2 are the diagonals. Using the info. we have we get 6+D2/2=12

    • 2 years ago
  62. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    So do we subtract 12-6? and then thats the D2?

    • 2 years ago
  63. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    No, here we multiply the 2 on both sides, so we get 6+D2=24. Then we subtract both sides by 6 and get D2=18 :)

    • 2 years ago
  64. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    No, here we multiply the 2 on both sides, so we get 6+D2=24. Then we subtract both sides by 6 and get D2=18 :)

    • 2 years ago
  65. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Ohhhh we multiply? Ok ok

    • 2 years ago
  66. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    wait but 18 isnt an answer ..

    • 2 years ago
  67. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Wait whoops yeah I made a mistake sry let me see.

    • 2 years ago
  68. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    lol ok <3 its ok xD

    • 2 years ago
  69. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    No wait if we double-check what we got, in the formula D1+D2/2=12 and put 6 & 18 in, 18+6/2=12;24/2=12;12=12 it's right.

    • 2 years ago
  70. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    thats weird cause 18 isnt an answer hold on maybe i made a mistake

    • 2 years ago
  71. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    What are the choices?

    • 2 years ago
  72. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    4 6 8 2

    • 2 years ago
  73. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Nope i didnt make a mistake

    • 2 years ago
  74. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I can't seem to find what I did wrong sry. :/ Try posting it as a question, other help you on that one.

    • 2 years ago
  75. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    i posted it xD

    • 2 years ago
  76. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    join it

    • 2 years ago
  77. Loujoelou Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Then once we find out what that one is I can help you w/ another one okay?

    • 2 years ago
  78. eAnthonyR Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    okkk :)

    • 2 years ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.