Question

The area of a circle is 36π square units. How many units long is its radius? (Use only the digits 0 - 9 and the decimal point, if needed, to write the answer.)

Answer 1

The radius is
`r=6\ units`

Explanation:

we know that

The area of a circle is equal to

`A=\pi r^(2)`

In this problem we have

`A=36\pi\ units^(2)`

substitute in the formula and solve for r

`36\pi=\pi r^(2)`

Simplify

`36=r^(2)`

square root both sides

`r=6\ units`