216mm
216000 mm
216,000 mm
216 inches = 548.6 cm
216 mm x 10 cm/mm x 1 inch/2.54 cm = 850.4 inches = 850 inches (3 significant figures)
21,600 cm
1 cm = 10 mm so 1.43 cm = 14.3 mm
1 cm = 10 mm.
2.4 cm = 24 mm 1 cm - 10 mm
1 cm = 10 mm 1.2 cm = 12 mm
1 cm = 10 mm
10 mm = 1 cm
A cm is 10 mm.