This math skill teaches how to calculate the perimeter of a rectangle by adding the lengths of all four sides, where opposite sides have equal lengths.
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Perimeter of a rectangle
Test your understanding of perimeter of a rectangle by practicing it! Work through the below exercises to use it in practice.
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Let's find the perimeter of a 4 by 12 rectangle
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Perimeter is the full distance around the outside
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For rectangles, opposite sides are the same length, so the side lengths are 4, 4, 12, and 12
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Adding these together, we find our perimeter, of 32