Question

What is the approximate area of a circle? Use pi = 3.14.

A. 32.7 square centimeters
B. 65.2 square centimeters
C. 108.2 square centimeters
D. 339.6 square centimeters

Answer 1

A=pi r^2
3.14*10.4^2
3.14*108.16
A=336.6224-----------full answer
A=339.6--------rounded

Hope this helps :)

Answer 2

The area of a circle is equal to pi time the radius squared.
So you get: A=3.14(10.4^2)
A=3.14(108.16)
A=339.62
Therefore your answer is D.