Thread: Calculus Problem

Please See Attached

You are going to be using the formula

First see that you are taking the integral from until that is when it intersects the x and y axes.

Now you need to find :
Notice that implies .
At the width of the line perpendicular to the x-axis is then . But this is the diameter of the circle. Thus, its radius is .
The area of this cross section (semicircle) is
(remember the 1/2 it is semi-circle )
Thus,

I think there is something wrong with your choices.

Dear PHckr:

Line #5 of your narrative reads:


Notice that implies .

Do you see the problem?

Regards,

Rich B.

Originally Posted by Rich B.

Dear PHckr:

Line #5 of your narrative reads:


Notice that implies .

Do you see the problem?

Regards,

Rich B.

Sorry