1. Find the surface area of the paraboloid

that lies above the unit circle.
Answer:
Because

and

you would get the following integral for surface area:
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To make this problem easier to solve we can convert into polar coordinates:


2. Find the surface area S of the portion of the hemisphere

that lies above the region R bounded by the circle


Answer:
First find the partial derivates of


We then set up the surface area integral and simplify:

Next we convert to polar coordinates and solve:
