document.write( "Question 312049: Estimate the number of cubic inches of metal contained in a cylinder with a rectangular shaped opening in the middle if: the cylinder has a diameter of 14 inches and a height of 30 in. The rectangular hole is 7 inches by 7 inches with a height of 30 inches \n" ); document.write( "
Algebra.Com's Answer #223111 by Fombitz(32388)\"\" \"About 
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The volume of the cylinder is
\n" ); document.write( "\"Vcyl=pi%2AR%5E2%2AH=pi%2A%2814%2F2%29%5E2%2A30=1470%2Api\"
\n" ); document.write( "The volume of the rectangular solid is
\n" ); document.write( "\"Vrs=l%2Aw%2Ah=7%2A7%2A30=1470\"
\n" ); document.write( "The volume of metal is the difference between the cylinder and solid volume,
\n" ); document.write( "\"Vm=Vcyl-Vrs=1470%2Api-1470=1470%2A%28pi-1%29\" or approximately,
\n" ); document.write( "\"Vm=3148\" cubic inches.
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