The driver's side windshield wiper is 75 cm long and spans an angle of 130 degrees in one swipe of the windshield. determine the distance that the tip of the windshield wiper travels in one swipe from left to right across the windshield.

Answer 1

If the wiper were allowed to do a complete rotation it would cover
2(75)π cm
but only does 130/360 part of that
so find (130/360)(150π) cm =

A more interesting question would be:
given that the actual blade of the 75 cm wiper is 40 cm long,
what is the area wiped by the blade in one wipe?

Answer 2

Thank you! It definitely would be a more interesting question!