The radius of circle S is half the radius of circle L. The radius of circle L is 8 millimeters. Which measurement is closest to the area of circle S in square centimeters?
A. 50.24 mm2
B. 25.12 mm2
C. 200.96 mm2
D. 12.56 mm2
All circles are similar......the scale factor of S to L = 1/2
Area of S =
Area of L * scale factor^2 =
(pi * 8^2) * (1/2)^2 =
64 pi / 4 =
16 pi ≈
50.24 mm^2
