document.write( "Question 1101661: If the area of the region bounded by the graph of y=x^3, the line x=2 and the x-axis is revolved about the line x=-1 then find the volume of the solid revolution. \n" ); document.write( "
| Algebra.Com's Answer #716442 by Alan3354(69443)     You can put this solution on YOUR website! If the area of the region bounded by the graph of y=x^3, the line x=2 and the x-axis is revolved about the line x=-1 then find the volume of the solid revolution. \n" ); document.write( "----------- \n" ); document.write( "The limits of x are 0 and 2. \n" ); document.write( "Use shells: \n" ); document.write( "Volume of a shell at x = dx*x^3*2pi*(x+1) \n" ); document.write( "dV = 2pi*(x^4 + x^3)dx \n" ); document.write( "Vol = 2pi*(x^5/5 + x^4/4) \n" ); document.write( "0 --> 0 \n" ); document.write( "For x = 2: \n" ); document.write( "Vol = 2pi*(32/5 + 4) \n" ); document.write( "= 104pi/5 cubic units \n" ); document.write( "=~ 65.345 cubic units\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |