document.write( "Question 903211: A large grain silo is to be constructed in the shape of a circular cylinder with a hemisphere attached to the top (see the figure). The diameter of the silo is to be 30 feet, but the height is yet to be determined. Find the height h of the silo that will result in a capacity of 13,725π ft3.
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Algebra.Com's Answer #548093 by ankor@dixie-net.com(22740)\"\" \"About 
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A large grain silo is to be constructed in the shape of a circular cylinder with a hemisphere attached to the top (see the figure).
\n" ); document.write( " The diameter of the silo is to be 30 feet, but the height is yet to be determined.
\n" ); document.write( " Find the height h of the silo that will result in a capacity of 13,725π ft3.
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\n" ); document.write( "From the information given, we know the radius of the silo = 15 ft
\n" ); document.write( "let h = the height of the cylinder portion of the silo (w/o the hemisphere)
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\n" ); document.write( "The total volume equation
\n" ); document.write( "\"pi%2A15%5E2%2Ah\" + \"2%2F3\"\"pi%2A15%5E3\" = \"13725%2Api\"
\n" ); document.write( "simplify, divide equation by pi
\n" ); document.write( "\"15%5E2%2Ah\" + \"2%2F3\"\"15%5E3\" = \"13725\"
\n" ); document.write( "Factor out 15^2
\n" ); document.write( "\"15%5E2%28h+%2B+2%2F3+%2A+15%29\" = 13725
\n" ); document.write( "divide both side by 15^2
\n" ); document.write( "h + 10 = \"13725%2F15%5E2\"
\n" ); document.write( "h + 10 = 61
\n" ); document.write( "h = 51 ft is the height of the cylinder portion of the silo
\n" ); document.write( "Add the height of the hemisphere
\n" ); document.write( "51 + 15 = 66 ft is the height of the silo
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