document.write( "Question 179213: I need help solving this question: A cylinder tank has a diameter fo 20 inches and a height of 30 inches. In it is a solid cylinder that has a diameter fo 12 inches and a height fo 30 inches. If the tank is filled with water, what percent of the original tank can be used for water?
\n" ); document.write( " \n" ); document.write( "
Algebra.Com's Answer #134163 by nerdybill(7384)\"\" \"About 
You can put this solution on YOUR website!
I need help solving this question: A cylinder tank has a diameter fo 20 inches and a height of 30 inches. In it is a solid cylinder that has a diameter fo 12 inches and a height fo 30 inches. If the tank is filled with water, what percent of the original tank can be used for water?
\n" ); document.write( ".
\n" ); document.write( "V = (pi)r^2h
\n" ); document.write( ".
\n" ); document.write( "Volume of original tank =
\n" ); document.write( "(3.14)(10^2)(30)
\n" ); document.write( "(3.14)(100)(30)
\n" ); document.write( "(3.14)(3000)
\n" ); document.write( "9420 cubic inches
\n" ); document.write( ".
\n" ); document.write( "Volume of solid cylinder =
\n" ); document.write( "(3.14)(6^2)(30)
\n" ); document.write( "(3.14)(36)(30)
\n" ); document.write( "(3.14)(1080)
\n" ); document.write( "3391.2 cubic inches
\n" ); document.write( ".
\n" ); document.write( "percent of the original tank can be used for water:
\n" ); document.write( "3391.2/9420 * 100
\n" ); document.write( "= 0.36 * 100
\n" ); document.write( "= 36%\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );