Question

A car has two wipers which do not overlap.Each wiper has a blade of length 21cm sweeping through an angle of 120

Answer 1

area wiped by two wipers

$= >2 ( \frac{\pi {r}^{2} 0}{360})$

$= > 2( \frac{ \frac{22}{7} \times 21 \times 21 \times 120}{360} )$

$= > 2( \frac{22 \times 3 \times 21}{3})$

$= > 2 \times 22 \times 21$

$= > 44 \times 21$

$= > 924 {cm}^{2}$

Hope this answer is helpful.