1. Find the volume of the solid bounded above by the sphere x² + y²+z² = 9 and below by the paraboloid 8z = x² + y².

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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1. Find the volume of the solid bounded above by the sphere x² + y² +2²=9
and below by the paraboloid 8z = x² + y².
Transcribed Image Text:1. Find the volume of the solid bounded above by the sphere x² + y² +2²=9 and below by the paraboloid 8z = x² + y².
Expert Solution
Step 1

Here region is bounded between 

sphere x2+y2+z2=9

and paraboloid 8z=x2+y2

We will use cylindrical system to represent volume in triple integral 

x=r cosθ , y=r sinθ , z=z
Here r is distance from z axis 
θ is angle cover by projection of surface / solid on xy plane 
Also 

x2+y2=r2cos2θ+sin2θ=r2and  dV= r dz dr d θ

 

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