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400 mm = 40 cm
Yes, 4000 mm is bigger than 40 cm. To compare the two measurements, you need to convert them to the same unit. Since 1 cm is equal to 10 mm, 40 cm is equal to 400 mm. Therefore, 4000 mm is greater than 400 mm, making 4000 mm bigger than 40 cm.
40 centimetres is equivalent to 400 millimetres
1 cm = 10 mm so 40 cm = 40*10 = 400 mm. Simple!
400 decimeters 4,000 cm 40,000 mm