How do you find the perimeter of a rectangle with diagonal

Question

Stephany Hart

Mathematics

22 March, 12:10

How do you find the perimeter of a rectangle with diagonal

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Cristina Morales · Answer 1

All the sides of a proper rectangle are 90 degrees.

So you use sine and cosine to figure out the two different lengths of sides (because rectangle sides are parallel). To find area you times the two sides together. To find perimeter you times the two sides by two and add them together.