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Why are there two different types of area formulas for parametric equations?

Why are there two different types of area formulas for parametric equations?-example-1
Why are there two different types of area formulas for parametric equations?-example-1
Why are there two different types of area formulas for parametric equations?-example-2
User Multisync
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1 Answer

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Explanation:

The first equation is the surface area of a curve that's been rotated about the x-axis.

The second equation is the area between a curve and the x-axis.

User Josh McKearin
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