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How can the volume of a sphere be determined? (Without simply using a formula you've been told.)
First, let's look at a circular cylinder.The volume is:
Example: Find the volume of the solid obtained by rotating about the x-axis the region under the curve y = √x from 0 to 1.
Any function that is rotated about the x-axis (or y-axis) creates a solid of revolution.
The general formula for finding the volume of a solid of revolution is:
Volume - solids of revolution
Calculus 2 Page 1