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Q: 3 cm equal how many mm?

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There are 10 mm in 1 cm, so there are 30 mm in 3 cm.

3 cm because 1 cm is equal to 10 mm so 30 mm is equal to 3 cm .

acc to science and maths , 1 cm-10 mm 3 cm=30 mm

3cm = 30mm

1 cm is equal to 10 mm, so 3 cm is equal to 30 mm

30 cm 1 cm = 10 mm 1 mm = 0.1 cm 100 cm = 1 meter

10 mm = 1 cm so 30 mm = 30/10 = 3 cm. Simple!

Yes 1 cm is 10 mm. Figure out how many mm are in 3 cm (multiplication comes to mind?) Now compare the above value you got with 20 and decide for yourself which is bigger. Try it. You can do it. Good luck!

30 mm

Each centimeter equals 10 millimeters, so 3 centimeters (cm) equals 30 millimeters (mm).

10 mm = 1 cm so 1 cm^3 would be equal to (10)^3 mm, so 1000 mm.

2 cm 3 mm = 23 millimetres

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