document.write( "Question 1198261: The base edges of a triangular pyramid are 12, 14, and 16, and its altitude is 22.
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Algebra.Com's Answer #831818 by ikleyn(52909) $\"\"$ $\"About$

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\n" ); document.write( "The base edges of a triangular pyramid are 12, 14, and 16, and its altitude is 22.
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document.write( "Find the area of the triangular base. Use the Heron's formula.\r\n" );
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document.write( "The half of the perimeter of the base triangle is  s =  =  = 21.\r\n" );
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document.write( "The area of the base is  A =  =  =  = .\r\n" );
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document.write( "The volume of the pyramid is   =  =  = .\r\n" );
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document.write( "Thus a = 154.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "On the Heron's formula, see the lessons\r
\n" ); document.write( "\n" ); document.write( " - Proof of the Heron's formula for the area of a triangle \r
\n" ); document.write( "\n" ); document.write( " - One more proof of the Heron's formula for the area of a triangle \r
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