1. ## Surface area integral?

ok so i have worked out this problem and i am getting a crazy number

here is the question:

find surface area of paraboloid z = x^2 + y^2 cut off by plane z = 9?

my solution is (74 $\pi$*sqrt(37) / 12 )- ( $\pi$/6)

can someone check my ans please it would help me so much

sorry if hard to read having trouble with it

2. And how do you get this answer?

3. using $\iint$ $\sqrt{fx^2+fy^2+1}$ da

4. 74/2= 37. Other than that, I get the same answer you do.

5. thanks alot was just unsure with that crazy number