circumference = 2*pi*7* centimeters
find the radius of a circle with circumference of 42.1
For a circle, circumference = 2 x pi x radius.
Circumference of a circle = 2*pi*radius
A circle with a radius of 8 inches has a circumference of 50.27 inches.
The radius of a circle is the distance from its centre to its circumference. If a circle has a radius of r units then the length of its circumference is 2*pi*r units.
The formula; 2 * Pi * Radius = circumference Will calculate the circumference of a circle.
Circumference = 2*pi*radius So the radius = circumference/2*pi
Circumference of a circle = 2*pi*radius Circumference = 2*pi*5.6 = 35.18583772 units
Circumference of a circle = 2*pi*radius or diameter*pi
The area of a circle with radius r is pi*r*r and its circumference is 2*pi*r Use the first to find r and then use that value of r in the second to find the circumference.