Question

A circle has a radius of 9 mm. What is the approximate area of the circle?
A. 1017.36 mm2
B. 508.68 mm2
C. 56.52 mm2
D. 254.34 mm2

Answer 1

D.254.34 mm2 is the correct answer

Answer 2

C..i think .....  cause 

r=a/π=99/π=≈ 5.61362m
and the formula is 
A=π r^2
plus....ur finding (r) so yea....