document.write( "Question 189329This question is from textbook Pre-Algebra
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document.write( ": I am trying to find the volume of a composite figure. The figure Is a cylinder that is 3 inches in height and 3 inches in length. Attached to one end of the cylinder is a cone which is 2 inches in length. The book wants me to find the volume of the composite figure. The following is what I've tried.
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document.write( "V= pi(r)to the power of 2 x H.
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document.write( "V= pi (3)to the power of 2 x 3 + 1/2 x 4/3 pi (2) to the power of 3.
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document.write( "V= pi (9)(3) + 2/3 pi (8)
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document.write( "V= 27 pi + 16.76 pi = 43.76pi. \r
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document.write( " So the answer would of been 43.76 pi. My teacher tells me this is wrong. So, I guess I need a new method for working this problem, and information to help me understand this topic better. Can you help?? \r
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document.write( "Thanks
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document.write( "~Ave
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document.write( "
Algebra.Com's Answer #142124 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! I am trying to find the volume of a composite figure. The figure Is a cylinder that is 3 inches in height and 3 inches in length. Attached to one end of the cylinder is a cone which is 2 inches in length. The book wants me to find the volume of the composite figure. The following is what I've tried. \n" ); document.write( "V= pi(r)to the power of 2 x H. \n" ); document.write( "V= pi (3)to the power of 2 x 3 + 1/2 x 4/3 pi (2) to the power of 3. \n" ); document.write( "V= pi (9)(3) + 2/3 pi (8) \n" ); document.write( "V= 27 pi + 16.76 pi = 43.76pi. \n" ); document.write( ": \n" ); document.write( "Lets see what I get when I attack this problem \n" ); document.write( "V = cylinder vol + Cone vol \n" ); document.write( "V = \n" ); document.write( "I have to assume that one of those 3\" measurements is the diameter, therefore \n" ); document.write( "r = 1.5 inches \n" ); document.write( "V = \n" ); document.write( "V = 21.20575 + 4.7124 \n" ); document.write( "V = 25.9 cu/in \n" ); document.write( ": \n" ); document.write( "It looks like you got the vol of a sphere instead of the vol of a cone \n" ); document.write( ": \n" ); document.write( "Did this make sense to you? \n" ); document.write( " |