<PRE><B>Question 836702</B>
A = LW


A = (2x)(5x)


A = 10x^2


90 = 10x^2


90/10 = x^2


9 = x^2


x^2 = 9


x = sqrt(9)


x = 3


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2x = 2*3 = 6


5x = 5*3 = 15


The dimensions of this rectangle is 6 by 15
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