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A model has tires that are 2 inches in diameter. How far with the model travel in 20 revolutions?

Oct 26, 2018

#1
+5088
+2

it will travel 20 circumferences

$$C = 2 \pi r = 2 \pi \left(\dfrac D 2\right) = \pi D\\ C = 2\pi~inch\\ 20C = 40 \pi ~inch$$

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Oct 26, 2018

#1
+5088
+2
$$C = 2 \pi r = 2 \pi \left(\dfrac D 2\right) = \pi D\\ C = 2\pi~inch\\ 20C = 40 \pi ~inch$$
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