Question

Suppose the circumference of a crop circle is 150.7968 hectometers (hm). What's the radius of the circle? (Use π = 3.1416.)

A. 24 hm
B. 96 hm
C. 48 hm
D. 16 hm

Answer 1

A. 24 hm

Explanation:

The formula for the circumference of a circle is ...

C = 2πr

Fill in the given values and solve.

150.7968 hm = 2×3.1416×r

(150.7968 hm)/6.2832 = r = 24 hm . . . . . divide by 2π

The radius of the circle is 24 hm.