Question

2. Determine the circumference of a circle with a radius of 4 in. C=

Answer 1

The circumference of a circle is given by the following formula:

`C=2\pi\text{ r}`

where r is the radius. By replacing r = 4 you obtain:

`C=2\pi(4)=25.13`

Hence, the circumference of the circle is 25.13 in