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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0
Answer:
Total area cleaned by 2 wipers
=2× area cleaned by 1 wiper
=2× area of sector with 115
∘
=2×
360
∘
θ
×πr
2
=2×
360
∘
115
∘
×
7
22
×25
2
Therefore area cleaned by wipers =
126
158125
cm
2
=1254.96
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85
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