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twenty three centimetres.
There are 100 centimetres in a metre. Therefore 75 centimetres is equal to 0.75 metres, or three quarters of a metre.
One inch is equal to 2.54 centimetres. Therefore, 3/8 of an inch is equal to (2.54 / 8) x 3 = 0.9525 centimetres.
One foot is equal to 30.48 centimetres. Therefore, 10 feet is equal to 10 x 30.48 = 304.8 centimetres.
There are 100 centimetres in one metre. Therefore, 23 centimetres is equal to 23/100 = 0.23 metres.