Homework Help: geometry

Posted by Piggy on Thursday, February 23, 2012 at 12:59am.

The base of a pyramid is a square. The perimeter of the base is 20ft, and the surface area of the pyramid is 65ft^2. Find the slant height of the pyramid.

geometry - Reiny, Thursday, February 23, 2012 at 8:08am
base is a 5 by 5 square

is the base included in the surface area ?
geometry - Piggy, Thursday, February 23, 2012 at 12:24pm
can I use tha formula is SA = b + 1/2pl?

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