Oscillations and Waves: JEE Main 2026 Physics question

A transverse wave on a string is described by $y = 3\sin(36t + 0.018x + \pi/4)$, where $x$, $y$ are in cm and $t$ in seconds. The least distance between the two successive crests in the wave is ____ cm. (Nearest integer) ($\pi = 3.14$)