C = 2 x r x pi
Since your circumference is known you can put that into the circumference equation.
18pi = 2 x r x pi
Divide 2 and pi from both sides and you get this
r = 9
your radius of your circle is 9
The circumference of a circle is 2*pi*radius or diameter*pi
Circumference of a circle: 2*pi*radius or diameter*pi
circumference = 18*pi feet
Circumference of the circle: 2*pi*9 = 18*pi cm
If a circle has a circumference of 18pi, the radius is 9.
The circumference of a circle is 2*pi*radius or diameter*pi
Circumference of a circle: 2*pi*radius or diameter*pi
Circumference = 36*pi
circumference = 18*pi feet
Circumference of the circle: 2*pi*9 = 18*pi cm
If a circle has a circumference of 18pi, the radius is 9.
The radius of a circle whose circumference is 36 pi (113.1) is: 18 (circumference divided by Pi divided by 2 = radius)
Circumference = pi*diameter So C = pi*18 = 56.5 units (approx).
It is: 36*pi
The circumference of a circle with a diameter of 18 yards is: 56.55 yards (diameter x Pi = circumference).
Circumference of any circle = 2*pi*radius or diameter*pi
If the diameter is 18, then the circumference is d*pi or 18pi. 18pi=56.52 if you use 3.14 as pi.