document.write( "Question 433404: The weight of a synthetic ball varies directly with the cube of its radius. A ball with a rdius of 2 inches weighs 4.40 pounds. Find the weight of a ball with the same material with a 3 inch radius.\r
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\n" ); document.write( "\n" ); document.write( "The weight of a ball of the same material with a 3 inch radius is____ lb.\r
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Algebra.Com's Answer #300440 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
The weight of a synthetic ball varies directly with the cube of its radius.
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\n" ); document.write( "w = k*r^3
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\n" ); document.write( "Solve for \"k\" using \"A ball with a radius of 2 inches weighs 4.40 pounds\".
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\n" ); document.write( "4.4 = k*2^3
\n" ); document.write( "k = 4.4/8
\n" ); document.write( "k = 0.55
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\n" ); document.write( "Equation:
\n" ); document.write( "w = 0.55*r^3
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\n" ); document.write( "Find the weight of a ball with the same material with a 3 inch radius.
\n" ); document.write( "w = 0.55*3^3
\n" ); document.write( "w = 14.85 lbs \r
\n" ); document.write( "\n" ); document.write( "The weight of a ball of the same material with a 3 inch radius is 14.85 lb.
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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