A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

gabbyalicorn

  • one year ago

A wheel has a diameter of 21 inches. Approximately how far does it travel in 3 revolutions? A. 63 in. B. 65.94 in. C. 98.91 in. D. 197.82 in.

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

    @MonKiwi

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

    I think A

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

    because 21 x 3 = g3

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

    63* i meant

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

    i would think its A as well, but i would like to have it confirmed just to be sure.

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

    yeah, okay.

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

    @johnweldon1993

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

    A is not the answer

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

    Why?

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

    @UsukiDoll

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

    @unknownunknown

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

    Keys: C=Circumference D=Diameter R=Radius 3.14=pi How to find the circumference: D=21 Divide that by 2 = 10.5 The formula for the circumference of a circle is 2×3.14×r Plug in the numbers: 2×3.14×10.5 Which equals 65.94 Then, we have to multiply that by 3. So, 65.94 x 3 = 197.82 Which is our answer.

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

    @geerky42

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

    So, remember c/d = pi. Re-arrange to get c = pi * d One circumference of a circle is equivalent to a full revolution. So we multiply by 3 for 3 revolutions. pi * d * 3 = 197.82, as YoungTrilogy stated.

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

    okay, thank you :) √

  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.