Question

Circle O has a circumference of approximately 28.3 cm. What is the approximate

length of the radius?

Answer 1

4.5 cm

Explanation:

The circumference of a circle is given by

C = 2*pi*r where r is the radius

28.3 = 2 * (3.14) *r

28.3 = 6.28 r

Divide each side by 6.28

28.3/6.28 = r

4.506369427=r

The approximate length of the radius is 4.5 cm