Question

Use spherical coordinates.
Evaluate
Triple integral SSSE
where E lies between the spheres
x^2 + y^2 + z^2 = 25
and
x^2 + y^2 + z^2 = 49
in the first octant.

Answers

the two spheres are r=5 and r=7

recall that the volume element is

dv = r^2 sinθ dr dθ dØ

this is easy to check your answer, since you can just directly subtract the inner volume from the outer one.

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