Question

The circumference of a circle whose radius is 9x sq. is

Answer 1

The circumference of circle is
`56.52x^2` units

Solution:

Given that,

Radius of circle =
`9x^2` units

To find: circumference of circle

The circumference of circle is given as:

`C = 2 \pi r`

Where, r is the radius of circle

Substitute, r =
`9x^2`

`C = 2 * 3.14 * (9x^2)\\\\C = 6.28 * 9x^2\\\\C = 56.52x^2`

Thus circumference of circle is
`56.52x^2` units