document.write( "Question 1081843: Hi, I really need help with this question: \r
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\n" ); document.write( "A cone has the same base radius as the radius of a sphere. If the volumes of the cone and the sphere are equal, by what factor is the height of the cone larger than its base radius?\r
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Algebra.Com's Answer #695892 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
The volume of the sphere is
\n" ); document.write( "Vs = (4/3)*pi*r^3
\n" ); document.write( "where r is the radius\r
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\n" ); document.write( "\n" ); document.write( "The volume of the cone is
\n" ); document.write( "Vc = (1/3)*pi*r^2*h
\n" ); document.write( "where r is the radius of the base and h is the height\r
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\n" ); document.write( "\n" ); document.write( "Note: Since the problem states that \"A cone has the same base radius as the radius of a sphere\", we can use the variable r twice.\r
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\n" ); document.write( "\n" ); document.write( "Since we're told that \"the volumes of the cone and the sphere are equal\", we can say
\n" ); document.write( "Vc = Vs
\n" ); document.write( "(1/3)*pi*r^2*h = (4/3)*pi*r^3
\n" ); document.write( "3*(1/3)*pi*r^2*h = 3*(4/3)*pi*r^3 multiply both sides by 3
\n" ); document.write( "pi*r^2*h = 4*pi*r^3
\n" ); document.write( "(pi*r^2*h)/pi = (4*pi*r^3)/pi divide both sides by pi
\n" ); document.write( "r^2*h = 4*r^3
\n" ); document.write( "(r^2*h)/(r^2) = (4*r^3)/(r^2) divide both sides by r^2
\n" ); document.write( "h = 4*r\r
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\n" ); document.write( "\n" ); document.write( "After isolating h, we get h = 4*r indicating that the height is 4 times the base radius.
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