Julia used 1 foot square stone tiles to make a patio. she laid the tiles in a square, 7 tiles wide by 7 tiles long. what is the are of julia's new patio

Step-by-step explanation:

The formula that is used to calculate the area of a square is this one:

Where "s" is the side lenght of the square

You know that Julia used 1 foot square stone tiles, then each side lenght of the this tiles is:

Since Julia laid 7 tiles wide by 7 tiles long, the side lenght of the new patio is:

Therefore its area is:

-3.5 is the distance.

i've had this question so choose the one in the absolute value sign.