In class 10 ncert what is the best solution of chapter areas related to circles give me the easiest solution of exercise 12.2 of question no. 11 . Find the simplest way to solve this 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.
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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. Q.11
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Given,
Radius (r) = 25 cm
Sector angle (θ) = 115°
Since there are 2 blades,
The total area of the sector made by wiper = 2×(θ/360°)×π r2
= 2×(115/360)×(22/7)×252
= 2×158125/252 cm2
= 158125/126 = 1254.96 cm2