2 times length times 2 times width
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Find the distance of each side and add to find the total perimeter.
To find the distance around a figure, you calculate the perimeter. The perimeter is the total distance around the outside of a shape or figure. To find the perimeter of a rectangle or square, you add up all the sides. For a circle, you can find the perimeter by multiplying the diameter by π (pi).
find the perimeter of a square that has 12 m side
I believe you've already found it.
In order to find the perimeter of a 3D rectangle you must gather the lengths of the known sides, calculate the missing rectangular values, and use the formula for perimeter.