document.write( "Question 1206678: derik bought a dartboard with a diameter of 20 inches. find the area of the dartboard in square inches
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Algebra.Com's Answer #844238 by mananth(16946)\"\" \"About 
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The diameter of dartboard is 20 inches\r
\n" ); document.write( "\n" ); document.write( "radius (r) = 10 inches\r
\n" ); document.write( "\n" ); document.write( "Area of circle = pi*r^2 \r
\n" ); document.write( "\n" ); document.write( "= pi*10 ^2\r
\n" ); document.write( "\n" ); document.write( "= 100 pi in^2\r
\n" ); document.write( "\n" ); document.write( " The area of the dartboard is 314 square inches.
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