# Having trouble graphing a Volume problem

1. Oct 6, 2006

### BlackMamba

Hello again,

Once I get this graphed correctly, I don't see any problems as to why I couldn't solve it. But for now I have a question about graphing this volume problem.

The problem says to find the volume generated by rotating the region bounded by $y=e^x$, $x=0$, and $y=\pi$ about the x-axis.

I have a picture of what I my graph would look like. The green curve is the line $y=e^x$, and the rust colored line is, $x=0$. My question is where do I graph $y=\pi$ ? Is it as simple as placing the line at y = 3.14?

Thanks for taking a look. It is greatly appreciated.

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2. Oct 7, 2006

### BlackMamba

Actually I think I got it. But if you could look at confirm or deny what I have come up with I would appreciate it.

#### Attached Files:

• ###### scan.gif
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Last edited: Oct 7, 2006
3. Oct 7, 2006

### fire

I'd love to confirm what you have, however, for some reason the attachment is "pending approval." I can't view it.

Left boundary is a vertical line at x=0. Right and bottom boundary is y=e^x. Top boundary is y=pi. There's an intersection point where y=e^x and y=pi meet. It should look like a triangle. Then you rotate about the x-axis.

I didn't bother attaching a picture since attachments on this forum need some approval.

4. Oct 7, 2006