document.write( "Question 621666: I have a tank that measures 30 feet wide x 30 feet long x 21 feet deep. I need to fill it with water to 80 perecent of it's capacity. How many inches below the top of the tank do I fill it to?\r
\n" ); document.write( "\n" ); document.write( "Thank you,
\n" ); document.write( "Joe Ducote \n" ); document.write( "

Algebra.Com's Answer #390844 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!

 
\n" );
document.write( "Hi,
\n" );
document.write( "tank that measures 30 feet wide x 30 feet long x 21 feet deep. V = 
\n" );
document.write( "  900*21ft = 18,900  and 900*(.80*21) = 900* 16.8ft =  15,120
\n" );
document.write( "     21 - 16.8 = 4.2ft = 48in + 2.4in  = 50.4 inches below the top of the tank \n" );
document.write( "

\n" );