document.write( "Question 1089184: If the lateral surface area of a square pyramid is 84 ft2 and the base edge is 6, what is the slant height? \n" ); document.write( "
Algebra.Com's Answer #703536 by ikleyn(52788)\"\" \"About 
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document.write( "The lateral surface of this pyramid is comprised of four congruent triangles.\r\n" );
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document.write( "So the area of each such triangle (lateral face) is \"84%2F4\" = 21 ft^2.\r\n" );
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document.write( "This area is half of the product the base edge length and the slant height:\r\n" );
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document.write( "21 = \"%281%2F2%29%2A6%2Ah\",\r\n" );
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document.write( "which gives h = \"%2821%2A2%29%2F6\" = \"42%2F6\" = 7 ft.\r\n" );
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document.write( "Answer. The slant height is 7 ft.\r\n" );
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