Question

The area of a circle is 9pi cm². Find its radius.

Please do this question with full solution:)​

Answer 1

3 cm

Explanation:

The formula for the area of a circle is:

`A = \pi r^2`

Where "r" represents the radius of the circle. We can substitute the given value for Area into the equation to solve for the radius.

Solve for Radius

`A=\pi r^2\\9\pi = \pi r^2`

Divide both sides by π

`9=r^2`

Take the square root of both sides

`\sqrt9=\sqrt {r^2}\\r=3`

The radius of the circle is 3 cm.