Light waves having two different wavelengths, 632 nm and 474 nm, pass concurrently via a single slit whose width is 4.45 x 10-5 m and hit a screen 2.00 m from the slit. The two diffraction patterns are made on the screen. Determine the distance (in cm) among the common center of the diffraction patterns and the first occurrence of the spot where a dark fringe from one pattern falls on the top of a dark fringe from the other pattern?