Question #N228
A circle has a radius of 5 cm. What is the circumference of the circle? (Use $\pi = 3.14$)
A. 15.7 cm
B. 31.4 cm
C. 78.5 cm
D. 157 cm
Correct Answer is: B
The circumference of a circle is given by the formula $C = 2 \pi r$, where $r$ is the radius. Substituting 5 for $r$ and 3.14 for $\pi$, we get $C = 2(3.14)(5) = 31.4$ cm.