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natta225 [31]
3 years ago
11

20. The perimeter of a square is 72 in. What is its area?

Mathematics
1 answer:
ivanzaharov [21]3 years ago
6 0

The formula for perimeter is length + length + width + width

You know that all the sides of a square are equal to each other. That means that all the values in the perimeter formula should be the same. Therefore you can divide 72 by 4 (perimeter divided by the number of sides)

72 / 4 = 18

^^^Each side is 18 in

The formula for are is...

A = length x width

so...

18 * 18 = 324

324 in^2

Hope this helped!

~Just a girl in love with Shawn Mendes

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