document.write( "Question 271643: Find the cost of painting the outer surface of 24 oil containers at $2.50 per square meter, the dimensions of each container being 60 centimeters by 40 centimeters by 56 centimeters. \n" ); document.write( "

Algebra.Com's Answer #854085 by ikleyn(53742) $\"\"$ $\"About$

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\n" ); document.write( "Find the cost of painting the outer surface of 24 oil containers at $2.50 per square meter,
\n" ); document.write( "the dimensions of each container being 60 centimeters by 40 centimeters by 56 centimeters.
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\n" ); document.write( "\n" ); document.write( "        As I read the solution in the post by @mananth, I was shocked.\r
\n" ); document.write( "\n" ); document.write( "        He writes \"There are 8 faces in a cuboid 4 faces will have same area. The other four faces will have same arae.\"\r
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\n" ); document.write( "\n" ); document.write( "        In opposite, a cuboid has 6 faces, and opposite faces have equal areas.\r
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\n" ); document.write( "\n" ); document.write( "        So, the @mananth solution is a fatal nonsense.\r
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\n" ); document.write( "\n" ); document.write( "        I came to bring a correct solution.\r
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document.write( "If a rectangular box has dimensions L (the length), W (the width) and H (the height), then\r\n" );
document.write( "its surface area is\r\n" );
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document.write( "    S = 2*(LW + LH + HL).\r\n" );
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document.write( "In our case, L = 60 cm = 0.6m;  W = 40 cm = 0.4 m;  H = 56 cm = 0.56 m,  and\r\n" );
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document.write( "    the surface area is  2*(0.6*0.4 + 0.6*0.56 + 0.40*0.56) = 2*0.8 = 1.6 m^2.\r\n" );
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document.write( "So, the cost of the painting is $2.50 times 1.6,  or 4 dollars.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved correctly.\r
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