document.write( "Question 775592: Volume of a Cone The volume V of a right circular cone is v=1/3pi r^2h. If the height is twice the radius, express the volume V as a function or r. \n" ); document.write( "
Algebra.Com's Answer #473009 by tanjo3(60)\"\" \"About 
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(1) h = 2r. Substitute for h in the equation.
\n" ); document.write( "V(r) = \"%281%2F3%29%28pi%29r%5E2%282r%29\"
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\n" ); document.write( "(2) r^2(2r) = 2r^3
\n" ); document.write( "V(r) = \"%281%2F3%29%28pi%29%282r%5E3%29\"
\n" ); document.write( "V(r) = \"%282%28pi%29%28r%5E3%29%2F3%29\"
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