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April 26, 2015

Homework Help: Math, please please help

Posted by Amanda on Tuesday, March 25, 2008 at 7:34pm.

The base length of each square-based prism in the pedestal design is 3cm less than that of the layer immediately below.

a) Write an algebraic expression for the total of the top surface areas of the three prisms used to make the pedestal.

x
x
x
2x+5
2x+5

Please help, i am so stuck.

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