Question (2): Identify the following surfaces: π (a) p = 9 (b) 0 = TU 3 (c) 4 = 7 Φ (d) p = 7/2 4 2 Question (4): Find the volume of the solid lying inside the sphere x² + y² + z² = 2z, and inside the surface described by z = x² + y². (Аns π) Question (5): Evaluate the integral: √4-x² 4-x²-y² 32π S²₂ So 50 ²(x² + y² + z²)dzdydx (Ans 327) 5 Question (6): Find the volume of the part of the solid unit ball with x < 0, π y > 0, z < 0. (Ans ) Question (7): Evaluate the integral ſ (x² + y²)dV, where Q is the solid below x² + y² + z² = 4, and above z = √√x² + y².. (Ans (8-5√2)) 16πT 15