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

lizz17 Group Title

Use the formula for the area of a trapezoid , where A is area, b1 and b2 are the length of the bases, and h is the height, to answer the question. How many square feet of grass are there on a trapezoidal field with a height of 75 ft and bases of 125 ft and 81 ft?

  • one year ago
  • one year ago

  • This Question is Closed
  1. Traxter Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Well, do you know the formula for the area of a trapezoid?

    • one year ago
  2. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    sorry about that it didnt copy.

    • one year ago
  3. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    A= h (b1+b2/2)

    • one year ago
  4. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    \[A={1 \over 2} \times (b1+b2) \times h\]

    • one year ago
  5. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    yes. Now plug in the values. b1=125, b2=81, h=75

    • one year ago
  6. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    what do you get?

    • one year ago
  7. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    idk); i need the steps and all that with the response. ive been doing that problem for 2 hours and still havent got it

    • one year ago
  8. Traxter Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    You have A=1/2×(b1+b2)×h So just sub in your values of b1 and b2 (the lengths of the bases) and h (the height of the trapezoid). What can't you do?

    • one year ago
  9. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    wait let me tell u so you can tell me if i got it right

    • one year ago
  10. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    I'll give you one example. I hope you understand so you can plug in the rest into the formula. \[A=75({b1+b2 \over 2})\] I plugged in h=75 into the equation that you gave. Now, plug in b1 and b2 to solve.

    • one year ago
  11. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    Go ahead. :)

    • one year ago
  12. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    Basically, their saying that the field is a trapezoid and they want to find the area of the field. What we're doing now is finding the area of the field.

    • one year ago
  13. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    A= h (b1+b2/2) A=75x(125x1+ 81x2/2) =125+6,561/2 =75x3,343 A=250,725 ehh im wrong huh? lol

    • one year ago
  14. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    b1 and b2 are just names. You don't have to multiply

    • one year ago
  15. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    it's short for 'base 1' and 'base 2'

    • one year ago
  16. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    This should be your equation. \[A=75({125+81 \over 2})\]

    • one year ago
  17. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    Can you solve it now? :)

    • one year ago
  18. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    the answer is 7,500? ;)

    • one year ago
  19. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    I can see why you were so confused. Solve the equation i gave. You're answer of 7,500 is close, but it's not correct.

    • one year ago
  20. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    A=75x(125+81/2) A=75x(206/2) A=75x103 A=7,725 I added right but isomehow made the 6 look like a 0. oopps

    • one year ago
  21. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    yes. 7,725 is right! :)

    • one year ago
  22. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    No worries. We all make mistakes now and then. ;)

    • one year ago
  23. lizz17 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yay!!! Thankyou so much!!!

    • one year ago
  24. monokerous Group Title
    Best Response
    You've already chosen the best response.
    Medals 3

    You're welcome!

    • one year 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.