A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

hi there, please help. thx <3 A circular picture is 8 inches in diameter. Part A What is the area of the picture in square inches? A. 4π square inches B. 8π square inches C. 16π square inches D. 32π square inches

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

    @ganeshie8

  2. ChillOut
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    \[A_{circle}=\pi*r^{2}.\] where r is the radius. You were given the diameter, which is 2 times the lenght of the radius.

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

    hes got it

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

    ok so i do 2x the length of the radius and then i'll get my answer, right? @ChillOut

  5. ChillOut
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You take half of the lenght of the diameter, which in this case is 8. The radius is 4.

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

    wait so my answer is 4 or i multiply it by four? sry i'm confused :b

  7. ChillOut
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1437145622174:dw|

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

    ok so would my answer be D.?

  9. ChillOut
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    You plug 4 in the equation I presented you, I.E. \[A_{circle}=\pi*(8/2)^{2}= 64/4*\pi\]

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

    ok so i did 60/4 and got 16

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

    so now i multiply it x pie right?

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

    hold on nvm :b i got confused

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

    \[Acircle= \pi \frac{ (dia)^2 }{ 4 }\\A= \pi \frac{ 8^2 }{ 4} inch^2\\A= \pi \frac{ 64 }{ 4 } inch^2\\A=16\pi\ inch^2\\ \therefore\ option\ C\ is\ Correct.\]

  14. ChillOut
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Yes. Another way to write the equation is \(A_{circle}=\pi*(\frac{ d }{ 2 })^{2}\) where "d" is the diameter of the circle.

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

    thank u guys! sry i went out :b

  16. 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.