Question

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

Answer 1

Answer: $49\ ft^2$

Step-by-step 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:

$s_{tile}=\sqrt{1\ ft^2}\\\\s_{tile}=1\ ft$

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:

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

Answer 2

Answer:

49 ft2

Step-by-step explanation: