WEBVTT
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Okay. In order to find the volume, we
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know that we're integrating along the parallel access to the
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axis of rotation. We know we have The radius
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is one minus. Y is equivalent to our therefore
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V is hi times, integral from 01 of the
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radius, which we said was one minus y squared
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. Do you? Why use the foil method to
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expand. Now we're at the point where we can
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find the integral use the power method, increase the
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experiment by one divide by the new exponents. Now
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we can plug in and we end up with power
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over three.