Pyramid Construction 101

You are a pyramid construction manager in ancient Egypt. One of your chores is to move great stone blocks from quarries to the pyramids, hundreds of miles away. Unfortunately, due to a flying saucer union strike, the blocks cannot be levitated as usual.

You hit upon the bright idea of rolling the blocks on large wooden rollers. Each of your rollers has a circumference of two cubits. For abstract booking purposes we won't go into here, you need to solve this simple problem:

For each complete revolution of a roller, how far will the block move? Assume there is no incidental sliding motion.