A prolific construction company based in Las Vegas and owned by the Marnell family. In 2005, formed a separate company â M Resorts â to create The M Resort (opening 2009 with 400 rooms) in south Las Vegas. The M Resort will be designed by Marnell Architecture and built by Marnell Corrao Associates.
Get help from a doctor now âº. Depnds on her height: Assuming an average 8 year old girl of 50 inches (50th percentile), the average weight is 57 lbs (a body mass index (bmi) of 50th percentile).. Get help from a doctor now âº. Depnds on her height: Assuming an average 8 year old girl of 50 inches (50th percentile), the average weight is 57 lbs (a body mass index (bmi) of 50th percentile). Bmi isn't a perfect measure so there are variations based on body type, especially muscle mass.
For both girls and boys at 8 years old, the median height is about 50 inches, or right around 4 feet tall, according to the Centers for Disease Control and Prevention.n 8-year-old boy weighing 50 lbs. at a height of 4 feet 1 inch tall has a BMI of 14.6. This number is then placed on a growth chart to arrive at a percentile.