Question
The region inside the cardioid $r=2+2 \cos \theta$ and outside the circle $r=3$.
Step 1
The area inside the cardioid is given by the integral $\int_0^{2\pi} \frac{1}{2} r^2 d\theta = \int_0^{2\pi} \frac{1}{2} (2+2\cos\theta)^2 d\theta$. Show more…
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