Question

fill in the blank. to find the circumference of a circle, multiply the diameter by

a. pi
b. radius
c. alpha
d. three

Explanation:

The formula for the circumference \(C\) of a circle is \(C = \pi d\), where \(d\) is the diameter. So, we multiply the diameter by \(\pi\) to get the circumference.

Answer:

A. pi