Question

Can someone please help me?

Answer 1

Formula:

A=Pi r²

Answer:

A=28.27

Answer 2

`A=28.26\\A=9\pi`

Explanation:

Use the formula:

`A=\pi r^2`

Insert values

`A=3.14 *3^2`

Simplify exponent

`A=3.14 *9`

Simplify multiplication

`A=28.26`

Orrrrr....

`A=\pi *3^2\\A=\pi *9\\A=9\pi`