SubArea: Angles, arcs and sectorsLevel: BProject ID: 2010018501Source Problem: 1003055208Accepted: 0Clonable: 1Easy: 1Which number \(k \in \mathbb{N}\) satisfies the equation \(\frac94 \pi = k\pi-\frac{k}4\pi\)?\(3\)\(2\)\(5\)\(4\)
