# What is the circumference of the given circle in terms of pi?

**Circumference **of a circle is defined as the length of the boundary of a circle. It is also known as the perimeter of a circle.

## Answer: 2 π r

The circumference of circle in terms of pi is 2 π r, where r is the radius of the circle.

**Explanation:**

The circumference of a circle in terms of pi is 2 π r, where r is the radius of the circle.

Suppose the radius of a circle is 15 cm then the circumference of circle given by 2 π r is equal to 30 π.