multiply the radius (r) by 2 to get the diameter (d). so if r=6 then 2*6=12 d=12.
then multiply by pi. pi=3.14. so 12 * 3.14 is 37.68 the circuference is 37.68
circumference = 2*pi*6 = 37.699 inches to 3 decimal places
12.56
mabye
75.36
Circumference = 2*pi*r = 12.566 cm (approx)
circumference = 2*pi*6 = 37.699 inches to 3 decimal places
12.56
mabye
Circumference = r x pi and d = 2r. So, r = d/2 = 6/2 = 3ft and Circumference = 3ft x 3.14 = 9.42.
The circumference of a circle is its perimeter, or the distance around it. It equals 2(pi)r or pi*d, where r is the radius, d is the diameter and pi is 3.14...
75.36
Circumference = 2*pi*r = 12.566 cm (approx)
C=2(pi)(r) therefore if r equals 3.20 then C=20.1061929
If that's a circle you are talking about, you need to multiply the radius by 2 x pi.
Presumably C means circumference and R means radius? If C = 2*pi*R Then R = C divided by 2*pi
Something that goes around
The circumference of a circle is the distance all around the edge of the circle. To find the circumference of a circle, you use the formula C equals 2 times pi times r, where pi is equal to 22 over 7 and r is the radius.