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gabbyalicorn

  • one year ago

A wheel has a diameter of 16 cm. Approximately how far does it travel in 5 revolutions? A. 502.4 cm B. 251.2 cm C. 100.48 cm D. 80 cm

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  1. gabbyalicorn
    • one year ago
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    @johnweldon1993 i think 80 what im doing : 16 x 5

  2. johnweldon1993
    • one year ago
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    When you travel 1 rotation...how far do you go? *hint...you travel in 1 full circle...so you cover how much distance?

  3. gabbyalicorn
    • one year ago
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    360

  4. johnweldon1993
    • one year ago
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    Okay right...360 degrees...which is also equal to \(\large 2\pi\) right?

  5. gabbyalicorn
    • one year ago
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    well when i did 2 x 3.14 it got me to 6.28

  6. gabbyalicorn
    • one year ago
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    which is 100.48

  7. gabbyalicorn
    • one year ago
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    divide 100.48 by 16

  8. gabbyalicorn
    • one year ago
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    oh wait no i was wrong

  9. gabbyalicorn
    • one year ago
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    so 100.48 x 5

  10. gabbyalicorn
    • one year ago
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    i just realized that

  11. gabbyalicorn
    • one year ago
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    which would be 502.4

  12. gabbyalicorn
    • one year ago
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    which would be A

  13. gabbyalicorn
    • one year ago
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    :D yay!

  14. unknownunknown
    • one year ago
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    c/d = pi. c = pi * d = 16 * pi. Times 5 rotations = 16 * pi * 5 = 251.2

  15. johnweldon1993
    • one year ago
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    Hang on 1 second...

  16. johnweldon1993
    • one year ago
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    Yes >.< that is correct right there! Dumb mistake!

  17. gabbyalicorn
    • one year ago
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    oh kk thanks again

  18. unknownunknown
    • one year ago
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    Easy to make

  19. johnweldon1993
    • one year ago
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    Thank you @unknownunknown it must be too late for me to think!

  20. unknownunknown
    • one year ago
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    Haha, don't worry I make worse all the time.

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