1000 millimetres = 1 metre so 200 m = 200/1000 = 0.2 metres. Simple!
20cm=200mm
hi, as a rule of thumb, approximately 60 bricks per sq metre , (60x16.5) about a thousand should do it.
200mm
200mm
200mm
600,000mm
200mm = 20cm
If you mean how many mm in 20cm then there are 200mm
41,000 of them.
0.6562 feet
25cm is longer than 200mm which equals 20cm