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.

Angle of each wiper = 115°
Radius 25 cm
Area cleaned at each sweep of the blade = Area of sector formed by wiper
= 115°/360° × πr² = 23/72 × π(25)²
= 23/72 × 22/7 × 25 × 25 = 151125/252 cm²
Area cleaned by two wiper’s blades = 2 × 158125/252 = 158125/126 cm²