Question

11. A bicycle wheel turns 15 times in covering a distance of 66 m. Find the radius of the wheel​

Answer 1

r = 10.5 m

Explanation:

Given that,

A bicycle wheel turns 15 times in covering a distance of 66 m.

We need to find the radius of the wheel.

The distance that a wheel travels in one rotation is simply the circumference of the circle.

`2\pi r=66`

Where

r is the radius of the wheel

Put all the values,

`r=(66)/(2\pi)\\\\r=(66* 7)/(2* 22)\\\\r=10.5\ m`

So, the radius of the wheel is equal to 10.5 m.