Question

Use the illustration below to calculate the circumference of the circle.

A. 6.28
B. 50.27
C. 11.56
D. 12.57

Answer 1

the correct answer is 4 * 3.14 = 12.56 but since D is the only option that is closest to this so the coorrect answer is D

Answer 2

the formula is C= D*pi, where D= 2*r, according to the illustration D=4, so
C= 4* 3.14= 12.57
so the answer is D. 12.57