Traveling at 6cm/sec, in one second, how much does the height of the center of wheel increase

Problem: A wheel with radius 5 cm is being pushed up a ramp at a rate of 6 cm per second. The ramp is 680 cm long, and 230 cm tall at the end.

So I found out that the wheel travels 31.4cm in one rotation, and if it's traveling at 6cm/sec it takes 5.23 sec to complete a rotation. the initial height is 5cm.
So if it travels at 6cm/sec in one second how much does the height of the center of the wheel increase?

The computers Hint: Think about how far the wheel travels in one second. How high is the center now?

When you walk 1 cm of ramp, the height increases by 230/680 cm.

if it travels 6cm in 1 sec, height increases 6 * 230/680 = 2.029 cm in 1 second