Question

A wiper blade of a car is of length 24 cm sweeping through an angle of begin mathsize 18px style text 120° end text end style. The total area cleaned at one sweep of the blade is​

Answer 1

`A=603.18\ cm^2`

Explanation:

The length of a blade, r = 24 cm

The sweeping angle is 120°.

We need to find the total area cleaned at one sweep of the blade. The area of sector is given by :

`A=(\theta)/(360)* \pi r^2`

`A=(120)/(360)* \pi * 24^2\\\\=603.18\ cm^2`

So, the total area cleaned at one sweep of the blade is
`603.18\ cm^2`.