The problem goes like that: we have a curve, z = xy, and we want to find the portion of the surface area above the circle (x^2 + y^2 <= 1 in the (x,y)-plane).(adsbygoogle = window.adsbygoogle || []).push({});

It's probably involving a double integral in polar coordinate or a triple in cylindrical, but I don't know how to set the problem. I did some volume under surface in 3D, but I don't know how to calculate the area of this surface.

Thank you very much!

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# Homework Help: Integral: Area of a surface in 3D

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