Question

A car has two wipers which do not overlap. Each wiper has a blade of length $25$ cm sweeping through an angle of $115°$. Find the total area cleaned at each sweep of the blades.

Answer 1

Given,

$Radius\left(r\right)=25cm$

$Sectorangle\left(\theta \right)=115°$

Formula

$Thetotalareaofthesectormadebywiper=2\times (\theta /360°)\times \pi r2$

$=2\times (115/360)\times (22/7)\times 252$

$=2\times 158125/252cm2$

$=158125/126$

$=1254.96c{m}^2$

Hence, the required answer is $1254.96c{m}^2$.