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Anna71 [15]
4 years ago
5

A wheel of radius 1.9 feet is moving forward at 12 feet per second. How fast is the wheel turning?

Mathematics
1 answer:
SOVA2 [1]4 years ago
8 0
Find the circumference to see how much of the wheel is touhing the ground

c=2pir
c=2pi1.9
c=2.8pi

2.8pi=distance per 1 rotation
number of rotations per second times 2.8pi=12feet per second
dvide both sides by 2.8pi
number of rorations per second=12/2.8pi
number of roations per second=6/1.4pi
number of roations per second=3/0.7pi
number of roations per second=30/7pi
aprox
number of roations per second=1.364 rotations per second

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