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1) http://www.geocities.com/asdfasdf23135/advcal23.JPG

For this question, we have to use the surface integral to compute the area, but I just can't picture what is going on geometrically, so I am stuck at the very begining...can someone please help me?

2) http://www.geocities.com/asdfasdf23135/advcal24.JPG

I don't quite get the setup for this question as well.

Firstly, we are given that z=y

Secondly, what does it mean for the normal to point away from the z-axis? Does it even define a unique direction?

Any general hints or explanation will be greatly appreciated!

For this question, we have to use the surface integral to compute the area, but I just can't picture what is going on geometrically, so I am stuck at the very begining...can someone please help me?

2) http://www.geocities.com/asdfasdf23135/advcal24.JPG

I don't quite get the setup for this question as well.

Firstly, we are given that z=y

^{2}-2x, -2__<__y__<__2, 0__<__z__<__4, but what does it mean geometrically? I can't understand this part...Secondly, what does it mean for the normal to point away from the z-axis? Does it even define a unique direction?

Any general hints or explanation will be greatly appreciated!

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