document.write( "Question 200166: Hi\r
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document.write( "A rectangular piece of sheet metal with an area of 800 in^2 is to be bent into a cylindrical length of stovepipe having a volume of 400 in^3. What are the dimensions of the sheet metal?\r
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document.write( "thanks for the homework help! \n" );
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Algebra.Com's Answer #150568 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! A rectangular piece of sheet metal with an area of 800 in^2 is to be bent \n" ); document.write( " into a cylindrical length of stovepipe having a volume of 400 in^3. \n" ); document.write( " What are the dimensions of the sheet metal? \n" ); document.write( ": \n" ); document.write( "Label the rectangular piece of metal as follows: \n" ); document.write( "; \n" ); document.write( "Let h = the length, (will be the length of the pipe) \n" ); document.write( "Let c = the width, (will be the circumference of the pipe \n" ); document.write( ": \n" ); document.write( "The area of the metal \n" ); document.write( "h * c = 800 \n" ); document.write( "h = \n" ); document.write( ": \n" ); document.write( "Find the radius from the circumference \n" ); document.write( "2*pi*r = c \n" ); document.write( "r = \n" ); document.write( ": \n" ); document.write( "The volume: \n" ); document.write( "pi*r^2*h = 400 \n" ); document.write( ": \n" ); document.write( "Substitute (c/2pi) for r, and (800/c) for h \n" ); document.write( "pi* \n" ); document.write( "cancel out a pi and a c \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( "Cancel the 4 into 800 \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "200c = 400*pi \n" ); document.write( "; \n" ); document.write( "divide 200 into both sides \n" ); document.write( "c = 2*pi \n" ); document.write( ": \n" ); document.write( "c = 6.283 is the circumference of the pipe \n" ); document.write( "; \n" ); document.write( "Find the height \n" ); document.write( "h = \n" ); document.write( "h = \n" ); document.write( "h = 127.33\" is the height of the pipe \n" ); document.write( ": \n" ); document.write( "The dimensions of the metal: 127.33\" by 6.283\" \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution by finding the volume with these value \n" ); document.write( "Find r \n" ); document.write( "r = \n" ); document.write( "r = \n" ); document.write( "r = 1\" \n" ); document.write( ": \n" ); document.write( "V = pi*1^2*127.33 \n" ); document.write( "V = 400.0 cu/in \n" ); document.write( " |