Question 879215
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Hi,
<img src='http://img210.imageshack.us/img210/7630/pyramid.png' border='0'/></a>
apothem(slant height of a face)
Surface Area: Add the area of the base to the sum of the areas of all of the triangular faces
Surface Area = base + 4 faces =  (10mm)^2 + 4{{{(1/2)10(10.326)}}}
V = {{{(1/3)(10mm)^2(15mm)}}}