2 Answers

Traore · Answer 1 · 2020-02-07T09:06:04+0000

Answer:
$49\ ft^2$

Explanation:

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

A=s^2

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:

$s_(tile)=√(1\ ft^2)\\\\s_(tile)=1\ ft$

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

$s_(patio)=7(1\ ft)\\\\s_(patio)=7\ ft$

Therefore its area is:

$A_(patio)=(7\ ft)^2\\\\A_(patio)=49\ ft^2$

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