c=2πr c/2π=r So: 3397/(2π)=r r=540.6
To find the circumference of a circle you multiply the diameter by pi (3.14), the diameter is two times the radius.
circum. = pi x diameter :)
13,260 miles (21,339.85 kilometres)
The circumference of a circle can be found by multiplying pi ( π = 3.14159 ) by the diameter of the circle. If you know the radius, the diameter is twice as large.