Posted by rob on Wednesday, March 14, 2012 at 8:22am.
find the area of each of the triangles
area = (1/2)base x height
= (1/2)(6)(8) = 24
So you have 4 of these plus the base.
see
http://math.about.com/od/formulas/ss/surfaceareavol_5.htm
I am assuming that by "slant height" you mean the height of the triangle and not the distance along the edge of the pyramid.
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