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A wheel has a diameter of 21 inches. About how far does it travel if it makes 30 complete revolutions?
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A wheel has a diameter of 21 inches. About how far does it travel if it makes 30 complete revolutions?
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Jan 20, 2017
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A wheel has a diameter of 21 inches. About how far does it travel if it makes 30 complete revolutions?
Mathematics
middle-school
Zegkljan
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You can use the circumference of a circle, that is
C = 2
π(d/2)
The one revolution of a wheel is
C = 2π(21/2) = 21
π in
For 30 complete revolutions, you will get
30(21 π) =
630
π in
=
1979.20 in
Mitesh K
answered
Jan 25, 2017
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Mitesh K
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