How to find the perimeter of a rhombus - Math

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Question

Given a rhombus with diagonal lengths of 12cm and 16cm, find the perimeter.12-30-2013_7-53-50_pm

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Answer

11-7-2013_5-46-24_pm

A rhombus is a parallelogram with all of its sides being equal. A square is a rhombus with all of the angles being equal as well as all of the sides. Both squares and rhombuses have perpendicular diagonal bisectors that split each diagonal into 2 equal pieces, and also splitting the quadrilateral into 4 equal right triangles.

With this being said, we know the Pythagorean Theorem would work great in this situation, using half of each diagonal as the two legs of the right triangle.

where is the hypotenuse.

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We find the hypotenuse to be 10cm. Since the hypotenuse of each triangle is a side of the rhombus, we have found what we need to find the perimeter.

Each side is the same, so we add all 4 sides to find the perimeter.

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