A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • 4 years ago

Please find my problem attached.

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

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

    Do you know trigonometry. If so, find the altitude h of the triangle using sin(72º)= h/6 your figure is a parallelogram (that is what those >> marks tell you), so the top side equals the bottom side. So AB has length 12. AE has length AB/3 = 4 the area of the parallelogram is h*base = h*12 (h from above) the area of the triangle is (1/2)*h*AE= (1/2)*h*4= 2*h (h from above) area of the shaded area = h*12 - 2*h = 10*h so find h!

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

    i got 60cm^2

  4. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    how?

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

    12*6 =area of the parallelogram 4*6*1/2= area of triangle and I subtracted the triangle from the parallelogram

  6. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    pretty close. Except 6 is not the height of the parallelogram. you need the height |dw:1328468550292:dw|

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

    how to I find that?

  8. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    trigonometry. the sine of an angle is opposite over hypotenuse |dw:1328468701639:dw|

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

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

    sorry you looking for 5S..

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

    i dont know any trig

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

    just use calculater..

  13. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    looks like you need to learn it

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

    42.8=shaded area

  15. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @cinar, are you sure?

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

    sorry guys

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

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

    57.06=shaded area

  19. phi
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    If you want to learn, here are two short videos that might help http://www.khanacademy.org/video/basic-trigonometry?topic=trigonometry he has more, if you like them

  20. 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.