document.write( "Question 1207754: find the number of 15 centimetre square tiles required to cover a rectangular floor of 5.4m long and 4.05m wide. find the cost of tiling the floor if each tile costs RM 3 \n" ); document.write( "

Algebra.Com's Answer #845800 by ikleyn(52782) $\"\"$ $\"About$

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\n" ); document.write( "find the number of 15 centimetre square tiles required to cover a rectangular floor
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\n" ); document.write( "\n" ); document.write( " The solution by @mananth gives a correct answer, but the logic of his solution is incorrect.\r
\n" ); document.write( "\n" ); document.write( " An accurate solution requires another approach.\r
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document.write( "First, we determine how many tiles are along the longer side. It is\r\n" );
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document.write( "     = 36.\r\n" );
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document.write( "Fortunately, it is an integer number.\r\n" );
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document.write( "Next, we determine how many tiles are along the shorter side. It is\r\n" );
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document.write( "     = 27.\r\n" );
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document.write( "Fortunately, it is an integer number, too.\r\n" );
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document.write( "Next step, we determine the total number of tiles as the product \r\n" );
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document.write( "    36*27 = 972.\r\n" );
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document.write( "Finally, we determine the cost of tiling  3*972 = 2916 RM.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved (accurately).\r
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\n" ); document.write( "\n" ); document.write( "Without checking that the numbers of tiles along each dimension are integer numbers,
\n" ); document.write( "you can not state that the required number of tiles is the product of dimensions (the total area)
\n" ); document.write( "divided by the area of a single tile.\r
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