What is the average weight of a 3 year and 8 months old girl Her birth was 2.370 kg?

The average weight of a 3 year and 8 months old girl is approximately 15.5 kilograms (34.2 pounds). However, this can vary greatly depending on the individual child's genetics, diet, and activity level.

To calculate the average weight of a 3 year and 8 months old girl, you can use the following formula:

Average weight (kg) = (Age in years x 2) + 8

Plugging in the age of 3.67 years (3 years and 8 months), we get:

Average weight (kg) = (3.67 x 2) + 8

Average weight (kg) = 15.34

Therefore, the average weight of a 3 year and 8 months old girl is approximately 15.34 kilograms.

It is important to note that this is just an average, and individual children may weigh more or less than this amount. If you are concerned about your child's weight, it is always best to consult with a healthcare professional.