A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

Find the area of the circle in simplest polynomial form. A = 3.14r2 2x+1 a: 6.28x2 + 3.14 b: 12.56x2 + 3.14 c: 6.28x2 + 3.14x + 3.14 d: 12.56x2 + 12.56x + 3.14

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

    What one you think?

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

    A

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

    A = 3.14r^2 since r = 2x+1 A = 3.14(2x+1)^2 Now all you have to do is simplify this expression. A=3.14(2x+1)(2x+1) A=3.14(4x^2 + 2x + 2x + 1) A=3.14(4x^2 +4x+1) A=12.56x^2 + 12.56x + 3.14

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

    Oh yes - i didn't understand the question at first you didnt say that r = 2x + 1

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

    i don't know how to do that

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

    the answers not A

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

    Nurali has worked it out for you

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

    you just say A = 3.14 r^2 when r = 2x + 1

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

    is it B

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

    i really don't understand how to do this stuff

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

    hello?

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

    its basic algebra you replace the r in 3.14 r^2 by 2x + 1 and simplify

  13. 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.