Question

Solve this problem please

Answer 1

Hi, Ptaverez1! :)

First we must length of an individual square; This can be achieved by using the formula for the area of a square:
$l^2$
$l=Length$

Lets input the information we already know:
$l^2=42.25$
Take square root.
$l=\sqrt42.25$
$l=6.5$

The length of an individual square tile is 6.5 ft.

Since they're are 9 tiles and the porch in a square, I can conclude that the measurements for the porch are 3 tiles by 3 tiles (as 3*3=9; using the formula for the area of a square.)

Since the length of the porch is 3 tiles, we must multiply the individual tiles piece length by 3:
$3*6.5$
$=19.5$

The formula for the perimeter of a square is:
$l*4$
$l=length$

Lets input the information we know:
$19.5*4$
$=78$

The perimeter of the porch is 78 feet²

Hope this helps.
-Benjamin