The wheels on Annie's bicycle are 20 inches in diameter. If each wheel makes 3 full revolutions every second, then how many feet does Annie travel in 1 second? Give your answer as an integer, rounded to the nearest foot.

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23-03-2018
Mathematics

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The wheels on Annie's bicycle are 20 inches in diameter. If each wheel makes 3 full revolutions every second, then how many feet does Annie travel in 1 second? Give your answer as an integer, rounded to the nearest foot.

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Аноним Аноним · Answer 1 · 2018-03-23T10:54:48+01:00

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Formula
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Circumference = πD

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Find 1 revolution
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Circumference = π x 20
Circumference = 62.83 inches

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Find 3 revolutions
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1 revolution = 62.83
3 revolutions = 62.83 x 3
3 revolutions = 188.50 inches

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Convert inches to feet
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12 inches = 1 foot
188.50 ÷ 12 = 16 feet (nearest foot)

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Answer: Annie will travel 16 feet in 1 second
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