Question

Determine the circumference of a circle with a radius of 4 units.
16 units
8 units
32 units
4 units

Answer 1

8, the radius is half of the circumference.

Answer 2

The formula to find circumference of circle is given by :

$C = 2\pi r$

Where r is radius of circle.

We are given radius as 4 units here.

Also we take pi as 3.14

plugging these values in the equation to find circumference,

$C = 2* 3.14 * 4$

C =25.12 units

So circumference of the circle is 25.12 units.