Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

tbrooks3

  • 3 years ago

A sector of a circle with a 120 degree arc has an area of 75(pi)in^2. Find the radius.

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

    θ = 120˚ = π/3 rad A = rθ 75 = r/3 r = 225 in

  2. tbrooks3
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    is the radius 225?

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

    I guess...

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

    isnt it r^2=225 therefore,r=15 in ??

  5. tbrooks3
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    did u square root 225?

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

    Sorry... Use wrong formula... I rework it...

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

    yeah..

  8. tbrooks3
    • 3 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    u dnt have to rework.. it was correct u only had to do the square root of 225 at the end. thanks :)

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

    A = 0.5 r^2 θ 75π = 0.5 (π/3)(r^2) 75 = (r^2)/6 r^2 = 450 r = √450 = 15√2

  10. 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