Best Answer

21.25 centimeters

or

212.5 millimeters

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Q: What is 21 centimeters plus 2 and a half millimeters?

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2.1 centimeters=21 millimeters

21 millimeters is 2.1 centimeters.

210 millimeters is 21 centimeters.

There are 10 millimetres in one centimetre. Therefore, 21 millimetres is equal to 21/10 = 2.1 centimetres.

2.1 centimeters or just less than an Inch.

Since there are no units specified for 21, I will just solve for all.21 Kilometers = 2100000 cm21 Hectometers = 210000 cm21 Decameters = 21000 cm21 Meters = 2100 cm21 Decimeters = 210 cm21 Centimeters = 21 centimeters21 Millimeters = 2.1 centimeters

You can convert from centimeters (cm) to meters (m) by dividing cm by 100. So 21 cm = 0.21 m. So, 2 m + 0.21 m = 2.21 m.

21 inches is 53.34 centimeters.

21 centimeters = 8.26771654 inches.

21 meters = 2,100 centimeters

21 cm

21 centimeters is 8.3 inches