The area enclosed between the x-axis, the curve y=x(2-x) and the ordinates x=1 and x=2 is rotated through 2π radians about x-axis. (

Question

The area enclosed between the x-axis, the curve y=x(2-x) and the ordinates x=1 and x=2 is rotated through 2π radians about x-axis. ( 
a)Calculate the volume of the solid revolution formed. 
(b)Calculate the rotating area.

Reiny · Answer

I did the same question this morning http://www.jiskha.com/display.cgi?id=1338115255