A 22‑year‑old woman weighs 58 kg and her height is 1.55 m. Calculate her Body Mass Index (BMI) and state the WHO classification for her BMI value.
Answer
BMI = 24.1 kg/m², classified as "Normal".
The correct answer is BMI = 24.1 kg/m², classified as "Normal". — State the BMI value and its classification.
Step-by-step solution
- Recall the formula for BMI: BMI = weight (kg) ÷ [height (m)]².
- Square the height: 1.55² = 2.4025.
- Divide the weight by the squared height: 58 ÷ 2.4025 ≈ 24.13.
- Round to one decimal place: BMI ≈ 24.1 kg/m².
- Refer to WHO classification: 18.5–24.9 is "Normal" weight.
- State the BMI value and its classification.
Common mistake: Using height in centimetres (155 cm) directly without converting to metres
Concept tested: BMI assessment in reproductive health
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