Solve the problem.
-Find the average height of the part of the paraboloid $z = 9 - x ^ { 2 } - y ^ { 2 }$ that lies above the $x y$-plane.
A) 3
B) $\frac { 9 } { 2 }$
C) $\frac { 27 } { 2 }$
D) $\frac { 45 } { 2 }$

Question

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The Answer of Solve the problem.
-Find the average height of the part of the paraboloid $z = 9 - x ^ { 2 } - y ^ { 2 }$ that lies above the $x y$-plane.
A) 3
B) $\frac { 9 } { 2 }$
C) $\frac { 27 } { 2 }$
D) $\frac { 45 } { 2 }$

Solve the Problem z=9−x2−y2z = 9 - x ^ { 2 } - y ^ { 2 }z=9−x2−y2

Solve the Problem $z = 9 - x ^ { 2 } - y ^ { 2 }$