To decrease an amount by 20%, what do you multiply by?
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Hi, Ptaverez1! :)
First we must length of an individual square; This can be achieved by using the formula for the area of a square:
Lets input the information we already know:
Take square root.
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:
The formula for the perimeter of a square is:
Lets input the information we know:
The perimeter of the porch is 78 feet²
Hope this helps.
-Benjamin
First we must length of an individual square; This can be achieved by using the formula for the area of a square:
Lets input the information we already know:
Take square root.
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:
The formula for the perimeter of a square is:
Lets input the information we know:
The perimeter of the porch is 78 feet²
Hope this helps.
-Benjamin