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A rectangular prism has a volume of 128 cubic feet. Two of the dimensions of the rectangular prism are the same measure. The third dimension is equal to the sum of the other two dimensions. What are the prism’s dimensions?

 Dec 6, 2018
 #1
avatar+16382 
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V = L x W x H

   =  L x L x (2L)

128 = 2L^3

L = 4 ft

 

Dimensions are thus   4 x 4 x 8 ft

 Dec 6, 2018

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