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Just because your equation is polar doesn't mean you can't do Calculus! Some tricks can extend the toolkit of Calculus to these special equations.

A cow is tied to one point of a silo of radius 30, with a rope of length \( 30 \pi \) which would allow it to reach the opposite end of the silo.

What is the total area of the grass that the cow can graze on?

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Given the graph above of the polar equation \(r=4+3\sin \theta,\) what is the area of the shaded region?

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**one loop** of the \(4\)-petal flower defined by the parametric equation \(r=5\cos 2\theta.\)

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