Question

Calculate the Body Mass Index (BMI) of a person whose weight is 50 kg and height is 1.5 m.

• A. 25.0 kg/m²
• B. 22.2 kg/m²
• C. 16.6 kg/m²
• D. 18.0 kg/m²

Answer 1

Answer:

B. 22.2 kg/m²

Understanding Body Mass Index (BMI)

Definition and Formula

• Body Mass Index (BMI) is a measure used to estimate the amount of body fat in an adult. It is calculated using a person's weight and height.

• The standard formula for calculating BMI is: BMI = weight (kg) / height (m)²

Application in Health and Fitness

• BMI is a screening tool and does not diagnose body fatness or health.

• It is commonly used in public health and fitness to categorize weight status:

  • Underweight: BMI less than 18.5

  • Normal weight: BMI between 18.5 and 24.9

  • Overweight: BMI between 25 and 29.9

  • Obese: BMI 30 or greater

Calculation Example

• Given: Weight = 50 kg, Height = 1.5 m

• Step 1: Square the height: 1.5 m * 1.5 m = 2.25 m²

• Step 2: Divide the weight by the squared height: 50 kg / 2.25 m² = 22.22 kg/m²

• The resulting BMI is approximately 22.2 kg/m².