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21 March, 16:40

About how many revolutions must a 20-inch diameter wheel make in order to travel a distance of 100 feet?

A. 1 1/2

B. 5

C. 9 1/2

D. 19

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Answers (1)
  1. 21 March, 16:50
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    С = πd = 3.14 * 20 = 62.8 in

    1 ft = 12 in ⇒ 100 ft = 1200 in

    1200/62.8 ≈ 19 revolutions
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