The perimeter is the length of the outside. If you know the length of one side, multiply that times four to get the perimeter.
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To find this answer, use the perimeter formula for a rectangle and plug in the numbers. (l+w)(2) (7.5+7.5)(2) 15(2) 30m
all u need to do is is add lenght by lenght and wighth by wighth
The distance around a figure. For a polygon, add the lengths of all of its sides to get the perimeter.
Divide the length of the diagonal of a square by 1.4142 (which is the square root of 2) to find the length of a side. Similarly, to find the length of the diagonal of a square, multiply the length of a side by 1.4142.
You can find square inches from square feet by multiplying square feet by 144.