I.8.14 Surface Integrals

(3.) \ (\ frac {\ text {}} {\ text {}} \) Condition: Find the area of the surface \ (l \) cut out the surface \ (h \). \ [L: x^{2}+y^{2} = 2 a z, \ quad h: \ left (x^{2}+y^{2} \ right)^{2} = 2 a^{2} x y. \]