From 6: 00 to 8: 00, take two scales and take 1/6 turns. The circumference of the circle =πd, so the moving distance s = 62.8 =1/6× 3.14× d.

So the diameter d of the clock is 120cm, so the radius r is 60cm, because the area of the circle S=πr? , so the walking area S= 1/6×3. 14×60? = 1884cm？