Question

Please help me on this question
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Answer 1

system of equations:
w=(3/2)*h (1)
w*h=54 area (2)

w=54/h substitute into (1)
54/h=3h/2
3h²=54*2
h²= 36 (we take only positive solution)
h = √36=6
h=6 in.
w=(3/2)*h=(3/2)*6= 9
w=9 in.
correct answer is D