Question

Sue lays a square mat under her weight set. If the area of the mat is 81 ft squared, what is the lengthof the side?

Answer 1

This problem is about the area of a square.

Notice that the mat has square form, this means its area is defined by

`A=l^2`

Where l is the length of each side.

Now, to find the length of the side, we just need to use the formula above and replace the area with its number 81

`81=l^2`

We solve for l

`l=√(81)=9`

Therefore, the length of the side is 9 feet.