a car has two wipers which do not overlap.Each wiper has a blade of length of 21 cm sweeping through an angle of 120.find the total area cleaned at each sweep of the blades
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This Questionwas too easy to answer
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Length of the blade cover a sector so we can calculate it by
Theta/360*πr²
Thats is 120°/360*22/7*21*21
1/3*22*3*21
22*3*7
66*7
462cm²
Now their are two wipers
The area covered by both will be 462*2=924cm²
Thank you
sincerely Sahil Dhande
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