Question

how do you find the surface area of a three dimensional object? Is it a triple integral? Or is it a double integral? I am confused

Answer 1

Write down the double integral that represents the surface area of z = f(x, y) over
the region R
1) f(x, y) = 2y + x2 where R is the triangle with vertices (0, 0), (1, 0), (1, 1).

Answer 2

I am confused because in my class notes when he did the example for surface area he did a triple integral and used one as the function to be integrated. Now on a lab project it says to use a double integral