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zhenek [66]
4 years ago
15

At a speed of 22 revolutions per minute, how long will it take a wheel of radius 10,

Mathematics
1 answer:
Bogdan [553]4 years ago
5 0
Well, if the radius is 10, then the circumference is \frac{2*10*22}7=\frac{440}7
What's the unit? Either way, 22 rev. per minute means each minute you go by 22*\frac{440}7=\frac{9680}7 units per second. Now you got the linear speed, just find out the time by dividing the distance by the speed!
So, what's the unit for the radius?
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