document.write( "Question 550970: Two semicircles are placed in a rectangle. The width of the rectangle is 9ft. Find the area of the shaded region. Use the value 3.14 for pi. Do not round! \n" ); document.write( "

Algebra.Com's Answer #359480 by Edwin McCravy(20055) $\"\"$ $\"About$

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document.write( "I assume the figure is like this\r\n" );
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document.write( "And the shaded area is this apple core: \r\n" );
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document.write( "The rectangle is a square with side 9, so its area is 9² or 81 sq.ft.\r\n" );
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document.write( "The two semicircles make 1 complete circle, with diameter 9, which\r\n" );
document.write( "means its radius is  and the area is pr²\r\n" );
document.write( "or p or p.\r\n" );
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document.write( "So if we subtract the circle's area from the square's area, we get\r\n" );
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document.write( "81 - p =\r\n" );
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document.write( "81 - ×3.14\r\n" );
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document.write( "81 - 20.25×3.14\r\n" );
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document.write( "81 - 63.585\r\n" );
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document.write( "17.415 sq.ft.\r\n" );
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document.write( "Edwin

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