Home > CALC > Chapter 11 > Lesson 11.2.4 > Problem11-84

11-84.

Find the area that lies outside $r = 2 + 2\operatorname{cos}(3θ)$ and inside $r = 4$.

$r = 4$ is a circle with a radius of $4$.
Subtract the area inside of $r = 2 + 2\operatorname{cos}(3θ)$ from the area of the circle.
The area inside of one "petal" is: