C = 12.566 inches.
Chat with our AI personalities
The circumference of a circle when the radius is 3 inches is: 18.8 inches (r x 2 x Pi = circumference)
Circumference = 2*pi*radius or circumference/2*pi = radius 90 inches/2*pi = 14 inches in radius =======================
A circle with a radius of 3 inches has a circumference of 18.8 inches
The circumference of a circle with a 13-inch radius is: 81.68 inches (r x 2 x pi = circumference).
Circumference of the circle if the radius is 12 inches is 2*pi*r = 24*pi = 75.398