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The diagonal of a rectangle is 15 cm, and the perimeter is 38 cm. What is the area? 

 Aug 2, 2021
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The diagonal of a rectangle is 15 cm, and the perimeter is 38 cm. What is the area? 

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Shorter side = a            Longer side = 19 - a

 

a2 + (19 - a)2 = 152

 

a = 1/2(19 - √89)

 

19 - a = 1/2(19 + √89)

 

Rectangle area = 68 cm2

 Aug 3, 2021

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