Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

moongazer

  • 3 years ago

is this correct? please check my answer :)

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

    |dw:1344582621979:dw|

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

    find the area of sector I got (128pi)/9 but my book says 35.45 What is the correct answer?

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

    radius=8 \[\theta=80degrees\]

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

    I double checked it and I am always getting (128pi)/9 or 44.68

  5. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Area of sector = pi*r^2 * theta/360°

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

    Sub in values: pi*8^2 * 80/360 = 128pi/9

  7. apple_pi
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    I'm pretty sure you're correct

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

    maybe the book has a typo Isn't it that Area of sector = (1/2) (r^2) (theta) theta is in radians

  9. moongazer
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    thanks :)

  10. waterineyes
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    \[Area = \frac{1}{2} \times 64 \times 80 \times \frac{\pi}{180} \implies 44.65\]

  11. waterineyes
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Just trying..

  12. moongazer
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    @waterineyes I think it should be 44.68 ? :)

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

    Actually it can be: \[Area = 44.698\]

  14. waterineyes
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    As value of \(\pi\) is not exact so you cannot say about the exact value..

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

    Here we all are approximating this value..

  16. moongazer
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ohh ok I get it :)

  17. waterineyes
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Surely your book is carrying something wrong for this question.. You are right @moongazer

  18. moongazer
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Thanks :)

  19. 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