Perimeter & Circumference Examples
What is the circumference of a circle with diameter 12 cm?
To find the circumference we need to multiply the diameter by π.
Find the circumference of a circle with a radius of 3 cm.
Find the radius of a circle with circumference of 31.4 cm.
In this problem we need to work backwards to find the radius. We start by plugging in the information we know: