John just turned 9 years old and has had his weight and height carefully measured.He weighs 80 pounds and his height is 4 feet,6 inches.What is his BMI?

Question

Quizplus · Accepted Answer

First, we need to convert John's weight and height into metric units: 
- Weight: 80 pounds x 0.4536 kg/pound = 36.3 kg 
- Height: (4 feet x 12 inches/foot + 6 inches) x 0.0254 m/inch = 1.37 m

Next, we can use the BMI formula: BMI = weight (kg) / height (m)^2 
Plugging in John's measurements: 
BMI = 36.3 kg / (1.37 m)^2 = 19.2 kg/m2

Therefore, the best choice is B.

John Just Turned 9 Years Old and Has Had His