A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 5 years ago

In the figure shown above, lengths AB, BD, and CD are all units. Angles A and C are both 45°. What is the perimeter of ABCD? What is the area of ABCD? i am going to attach the figure

  • This Question is Closed
  1. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1 Attachment
  2. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    12 +6sqrt(2) is perimiter, 18 is area

  3. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    fisrt find the high \[\sin45=h/3\sqrt{2}\]

  4. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[\sin45=\sqrt{2}/2\]

  5. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    do anothe way , this take to long

  6. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    AD= \[(3\sqrt{2})^{2}+(3\sqrt{2})^{2}\]

  7. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    AD=(9*2)+(9*2)=36

  8. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i tried using the special right triangle 45-45-90. for the perimenter i got 6 sqart(2)

  9. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[p=( 36+3\sqrt{2})*2\]

  10. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Area: Use special triangles to notice that they are right triangles, then b*h/2 = 3sqrt(2)*3sqrt(2)/2 for each, and there are two, so 18 Perimeter: 3sqrt(2) *sqrt(2) =6 for the top and bottom, then add em up

  11. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    sorry square 36=6

  12. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    base =6

  13. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    i tought the base is 6

  14. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    yes base =6 I forget after square36=6

  15. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    so the area is 18sqt(2). is it

  16. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    now you have the base you can solve for Perimeter and area

  17. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[P=(6+3\sqrt{2})*2\]

  18. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A=(b*h)/2

  19. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    A=(3*6)/2 =9 2 triangle than (9*2)=18 A=18

  20. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thank u

  21. anonymous
    • 5 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    P=20.49

  22. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

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.