document.write( "Question 635189: The circumference of a circle is 42 pi inches. What is the area of the circle to the nearest tenth of an inch?\r
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document.write( "Which answer is it?\r
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document.write( "a. 66.0 in.^2\r
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document.write( "b. 131.4 in.^2\r
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document.write( "c. 1185.4 in.^2\r
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document.write( "d. 1385.4 in.^2 \n" );
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Algebra.Com's Answer #400145 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! 2*pi*r=42pi\r \n" ); document.write( "\n" ); document.write( "r=21 \n" ); document.write( "pi*21^2 \n" ); document.write( "d) 1385 .4 in^2 \n" ); document.write( " |