Question 271791
Solve the problem. Round answer to 2 decimal places
What is the difference in area covered by a single 10-inch windshield wiper operating with a central angle of 126 degrees compared to a pair of 3-inch wipers operating together each having a central angle of 106 degrees?
: 
A three inch wiper!! Anyway, here's the method

:
Find the area covered by the single 10" wiper that covers 126 degrees
:
{{{A = pi*10^2}}}*{{{126/360}}}
A = 109.96 sq/in
:
Find the area of the two 3" wipers that covers 106 degrees each
{{{A = pi*3^2}}}*{{{106/360}}} * 2
A = 16.65 sq/in

A big difference