Question

In making 1000 revolutions, a wheel covers 88 km. The diameter of the wheel is ______.

Options

• 14 m

• 24 m

•  28 m

• 40 m

Answer 1

In making 1000 revolutions, a wheel covers 88 km. The diameter of the wheel is 28 m.

Explanation:

Distance covered by the wheel in 1 revolution`=((88xx1000)/1000) "m'`

= 88 m

We have:

Circumference of the wheel = 88 m

Now, let the diameter of the wheel be d m.

Thus, we have:

πd = 88

`=>22/7xx"d"=88`

`=> "d" =(88xx7/22)`

⇒ d = 28 m