Question

If the side length of a square is 9ft, what is the area?

18 feet squared
36 feet squared
81 feet squared
81 feet
18 feet

Answer 1

`\boxed {\tt A= 81 \ ft^2}`

Explanation:

The area of a square can be found using the following formula:

`A=s^2`

where
`s` is the side length.

We know the side length is 9 feet.

`s= 9 \ ft`

Substitute the value into the formula.

`A=(9 \ ft)^2`

Evaluate the exponent.

• (9 ft)²= 9 ft* 9ft = 81 ft²

`A= 81 \ ft^2`

The area of the square is 81 feet squared.