<PRE><B>Question 184146</B>
find the surface area of the rectangular prism 9in.x 9in.x 12in
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rectangular prisms have 6 sides.  The sides are pairs, 2 of each area.
For a prism with sides a, b and c, the area is
2ab + 2ac + 2bc
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For this one:
A = 2*9*9 + 2*9*12 + 2*9*12
A = 162 + 216 + 216
A = 594 sq inches
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