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22 votes
22 votes
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?

User Frslm
by
2.0k points

1 Answer

22 votes
22 votes

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.

User MatijaG
by
2.7k points
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