Answer:
The area covered by the wiper blade is 35 square inches
Step-by-step explanation:
Here, we want to calculate the area covered by the blade of the wiper
Mathematically, this is simply the area of the sector formed by the wiper on the screen
This can be calculated as follows;
theta/360 * pi * r^2
From the question theta = 50 degrees
r = the length of the wiper = 9 inches
So the area is;
50/360 * 22/7 * 9^2 = 35.35714285714286
This is closest to 35 square inches
