It is: 2*pi*13 = 81.681 cm
The circumference of a circle if its radius is 13cm is: 81.68 cm
26
The formula for the circumference (C) of a circle is C = 2πr where r is the radius. But, the diameter (D) of a circle is twice the radius so this formula can be written C = πD. C = π x 13 = 40.841 cm (3dp)
Radius = about 13cm Diameter = about 26cm
The radius of a circle with a circumference of 110 is: 17.507
The circumference of a circle with a radius of four is: 25.13
The circumference of a circle with a radius of 6.7 is: 42.097
The circumference of a circle with a radius of 11 is: 69.12
If a circle circumference is 30 the radius is: 4.77
A circle with a radius of 4m has a circumference of 25.133m.
The radius of a circle with a circumference of 59 is: 9.39
The circumference of a circle with a 2pi radius is: 39.58