Use Stokes’ Theorem to evaluate ∫ F · dr, where F(x, y, z) = (x² + y²)i + (x + z²)j, and C is the boundary...?

Use Stokes’ Theorem to evaluate ∫ F · dr, where F(x, y, z) = (x² + y²)i + (x + z²)j, and C is the boundary of the part of the cone x² + y² = z² below z = 1 in the first octant.