Question 170090
a circle has a radius of 10 inch. Find the increase in area that occurs when the radius is increased by 2 inches. Round to the nearest hundredths?
-----------
At 10": Area = pi*10*10
A = 100*pi
At 12": Area = pi*12*12
A = 144*pi
The increase is 44*pi
44*pi = 138.23 sq inches