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OpenStudy (itsbribro):
A wheel has a radius of 15 cm. Approximately how far does it travel in 4 revolutions? A. 188.4 cm B. 94.2 cm C. 376.8 cm D. 47.1 cm
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OpenStudy (anonymous):
Ok so you first find the circumference. The distance of one revolution is the circumference.
OpenStudy (anonymous):
So you find the circumference and then multiply it by 4 to get the distance for 4 revolutions
OpenStudy (anonymous):
the equation for circumference is 2(pi)r
OpenStudy (anonymous):
= 30(pi)
OpenStudy (anonymous):
multiply it by 4, and your answer is 120(pi)
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OpenStudy (anonymous):
Does this make sense
OpenStudy (itsbribro):
ohh ok now i got it thank you so much!!
OpenStudy (anonymous):
No problem :)
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