Consider the solid obtained by rotating the region bounded by the given curves about the y-axis.
http://www.webassign.net/www14/symImages/5/5/e52c6d3f5c64e9f5bf52f9a215f4f2.gif
Find the volume V of this solid.
^^
So basically that's the question and i can't solve it.
i started...
http://www.webassign.net/www14/symImages/5/5/e52c6d3f5c64e9f5bf52f9a215f4f2.gif
V = (pi)(r^2)
I tried to graph this but it seemed like the graph kept going. what do i do?
Sketch the region enclosed by the given curves. Decide whether to integrate with respect to x or y. Draw a typical approximating rectangle and label its height and width.
http://www.webassign.net/www28/symImages/2/b/4def6fad2db11c7dd01c3a136b1fba.gif
Then find the area S of the region...