Use polar coordinates to find the volume of the solid under the paraboloid $z = x ^ { 2 } + y ^ { 2 }$ and above the disk $x ^ { 2 } + y ^ { 2 } \leq 9$.
A) $81 \pi$
B) $162 \pi$
C) $324 \pi$
D) $27 \pi$
E) $40.5 \pi$

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The Answer of Use polar coordinates to find the volume of the solid under the paraboloid $z = x ^ { 2 } + y ^ { 2 }$ and above the disk $x ^ { 2 } + y ^ { 2 } \leq 9$.
A) $81 \pi$
B) $162 \pi$
C) $324 \pi$
D) $27 \pi$
E) $40.5 \pi$

Use Polar Coordinates to Find the Volume of the Solid z=x2+y2z = x ^ { 2 } + y ^ { 2 }z=x2+y2

Use Polar Coordinates to Find the Volume of the Solid $z = x ^ { 2 } + y ^ { 2 }$