A load of topsoil has a volume of 7.5 m³. You wish to spread the topsoil over an area measuring
(30x + 22.5) m². Create an expression for the depth of the topsoil.

area = length x width

length = 2 x width

32 = 2 x width x width

32 = 2 x width^2

36 = width ^2  

width = 6

length = 12

area is 32

perimeter = 2 x 12 + 2 x 6 = 24 + 12 = 36

step-by-step explanation:

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