document.write( "Question 1138613: How many whole rectangular firebricks measuring 9\"x4.5\" will fit on the floor of a 38\" diameter round firepit? Voids left by the firebricks just inside of the perimeter of the circle are acceptable; no bricks will be cut. Thanks! \n" ); document.write( "
Algebra.Com's Answer #756407 by ikleyn(52803)\"\" \"About 
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document.write( "I do not think that this problem assumes getting precisely correct number of firebricks.\r\n" );
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document.write( "I think that obtaining a reasonable estimation is totally enough.\r\n" );
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document.write( "To get the estimation, take the area of the circle and divide it by the area of one single firebrick.\r\n" );
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document.write( "The area of the circle is  \"pi%2Ar%5E2\" = \"3.14%2A%2838%2F2%29%5E2\" = \"3.14%2A19%5E2\" = 1133.54 square inches.\r\n" );
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document.write( "The area of the firebrick is  9*4.5 = 40.5 square inches.\r\n" );
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document.write( "So the answer (the final estimation) is  N = \"1133.54%2F40.5\" = ~ 28 firebricks.    ANSWER\r\n" );
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\n" ); document.write( "\n" ); document.write( "Another, more conservative estimation is to increase the radius of the circle by half the diagonal of the firebrick
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\n" ); document.write( "\n" ); document.write( "By knowing the idea, you can make all necessary calculations on your own.\r
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\n" ); document.write( "\n" ); document.write( "To wide your horizon, you may want to look some sources from the Internet\r
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\n" ); document.write( "\n" ); document.write( "https://math.stackexchange.com/questions/2984061/cover-a-circle-with-squares\r
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