document.write( "Question 184146: find the surface area of the rectangular prism 9in.x 9in.x 12in \n" ); document.write( "
Algebra.Com's Answer #138175 by Alan3354(69443)\"\" \"About 
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find the surface area of the rectangular prism 9in.x 9in.x 12in
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\n" ); document.write( "rectangular prisms have 6 sides. The sides are pairs, 2 of each area.
\n" ); document.write( "For a prism with sides a, b and c, the area is
\n" ); document.write( "2ab + 2ac + 2bc
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\n" ); document.write( "For this one:
\n" ); document.write( "A = 2*9*9 + 2*9*12 + 2*9*12
\n" ); document.write( "A = 162 + 216 + 216
\n" ); document.write( "A = 594 sq inches
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