Q. 114.2( 200 Votes )
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 :
It can be seen from the figure that each blade of wiper would sweep an area of a sector of 115° in a circle with 25 cm radius
Area of sector = 
Area swept by 2 blades :
= 1254.96 cm2
=1255 cm2 (approx)
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