To find her ideal weight, you must know her height.
You cannot express weight in centimeters.
hieght: 5.3 - 5.5 weight: 100lbs - 120lbs
about 8.5kg
about 80-100 pounds.
You can not calculate a healthy weight by age and average as everybody is genetically differant. The best way to check the health of the twelve year old is. BMI, (body mass index), which is calculated by either:- Height and weight. OR Weight and waist size.
The average is 45kg, but in the 50's is ok.
it is 35 or 36
About 150 pounds
85 pounds
They should probably weight about 100-115 pounds
about 90 pounds
The average height for a year-old boy is between 25 and 30 inches, and the average weight to go along with that is roughly 25 pounds or so.