Question

Find the area of a circle with a circumference of 31.4 units.

Answer 1

I agree with you. that is what I got too

Answer 2

area = 78.46

Explanation:

31.4 = 2pi * r

divide 31.4 by 2 and get 15.7

15.7 = pi * r

divide 15.7 by pi and get

4.997 = r

(4.997^2) * pi = 78.46