What is the circumference of a circle with a diameter of 30 centimeters?

Solution:

The circumference of a circle is the total length of the circle. It is similar to the perimeter of a quadrilateral.

The diameter of a circle is given by joining any two points on the circle such that the line passes through the center. In other words, the diameter of a circle is twice its radius i.e., 2r.

Given: diameter of circle = 30 cm

The formula for calculating the circumference of a circle = 2πr

π is the numerical constant with an approximate value of 3.14156

2πr = (2r) × π = 3.14156 × 30

Thus, the circumference of the circle = 94.2486 = 94.25 (after rounding off to two decimal places)

Hence, the circumference of the circle is 94.25 centimeters

What is the circumference of a circle with a diameter of 30 centimeters?

Summary:

The circumference of a circle with a diameter of 30 centimeters would be 94.25 centimeters