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ABCD is a quadrilateral such that AB = 7, BC = 15,CD = 20, and ∠A = ∠C = 90◦ . What is the perimeter of quadrilateral ABCD?

 Nov 23, 2020
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BD = sqrt(202 + 152) = 25

 

AD = sqrt( 252 - 72) = 24

 

The perimeter of quadrilateral ABCD = 7 + 15 + 20 + 24 = 66

 Nov 23, 2020

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