a cars windsheild wiper rotated 125degrees. the total length of the wiper mechanism is 25 inches and wipes the windshield over a distance of 14inches. find the area coveredby the wiper.
Thanks and just for laughs.. i once knew a guy whose whole left side got chopped off, hes all right now.
First, find Θ
s =rΘ
14 = 25Θ
So Θ = 14/25 rads
A = (1/2)r2Θ
A = (1/2)(25cm)2 (14/25) = 7(25)cm2 = 175cm2