Question

A bicycle's wheel of diameter 70c.m makes a revolution in 1 second. Calculate the distance it covers in km/ hr

Answer 1

Answer:

Step-by-step explanation:

Circumference=2×π×rr=70cm=0.7mC=2×π×0.7⟹C=4.4m

So, here the distance covered after one revolution is 4.4 meters. The distance covered in 1 second is 8.8 meters, because the wheel makes 2 revolutions in one second.

Speed=8.8m/sTo km/hSpeed=8.8×185S=31.68km/hDistance covered after 720 rev=4.4×720⟹D=3168m=3.168km

Answer 2

Answer:

Hope it's helpful for you