Hello, Gauss's law!
These are basically of the same type: .
Exactly where is your difficulty?
This is an 8-leaf rose curve with one leaf on the 0°-line.1) Find the area enclosed by one loop of the curve: .
To find the limits, solve
Due to its symmetry, we can integrate from 0 to and multiply by 2.
We have: .
Can you finish it?