Question

The diameter of a circle is 19 cm.
Find its circumference in terms of Pi

Answer 1

Explanation:

just apply the formula.

the circumference of a circle is

C = 2 × pi × r

r = radius = diameter / 2

in our case r = 9.5 cm (19/2)

so, the circumference is

C = 2 × pi × 9.5 = 19 × pi