Azimuthally averaged properties of the disk at 1, 5, and 10 Gyr. The top panels show the stellar surface density profiles, with the dotted lines representing double exponential fits. The two exponential components were fit simultaneously to the profile, excluding the innermost and outermost regions. The point of intersection of the two exponentials is taken as the break radius. In all panels, the vertical lines indicate the location of the break. The second row shows the surface density of cool gas. In the third row, we show the SFR density calculated from the stellar mass formed in the previous 10 Myr. The mean stellar age (normalized by time of output) as a function of radius is shown in the bottom row.