doodles342 doodles342

10-03-2016
Mathematics

Answered

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. 47.1 cm D. 376.8 cm

Verified Answer :

meerkat18 meerkat18

10-03-2016

Given:
radius = 15 cm

1 revolution is equal to 1 turn of the wheel. Thus, we need to get the circumference of the wheel.

circumference = 2 π r
C = 2 3.14 15cm
C = 94.2 cm

94.2 cm * 4 revolutions = 376.8 cm CHOICE D.

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