Asked by Raju

The length of a rectangle is three times its width and length of its diagonal is 6√(10)cm.What is the perimeter?

Answers

Answered by Reiny
width -- x
length -- 3x

so x^2 + (3x)^2 = (6√10)^2
10x^2 = 360
x^2 = 36
x = 6

finish it up
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