A group of athletes have the following heights and masses: Athlete A (168cm, 62kg), Athlete B (175cm, 78kg), Athlete C (182cm, 95kg), Athlete D (160cm, 52kg). Calculate their Body Mass Index (BMI) and

• Athlete A: $168 \text{ cm} \div 100 = 1.68 \text{ m}$
• Athlete B: $175 \text{ cm} \div 100 = 1.75 \text{ m}$
• Athlete C: $182 \text{ cm} \div 100 = 1.82 \text{ m}$
• Athlete D: $160 \text{ cm} \div 100 = 1.60 \text{ m}$

The heights in meters are:

• Athlete A: $\boxed{\text{1.68 m}}$
• Athlete B: $\boxed{\text{1.75 m}}$
• Athlete C: $\boxed{\text{1.82 m}}$
• Athlete D: $\boxed{\text{1.60 m}}$

Question 1.1.2

• Athlete A: $$\text{BMI}_A = \frac{62 \text{ kg}}{(1.68 \text{ m})^2} = \frac{62}{2.8224} \approx 21.967$$
• Athlete B: $$\text{BMI}_B = \frac{78 \text{ kg}}{(1.75 \text{ m})^2} = \frac{78}{3.0625} \approx 25.470$$
• Athlete C: $$\text{BMI}_C = \frac{95 \text{ kg}}{(1.82 \text{ m})^2} = \frac{95}{3.3124} \approx 28.680$$
• Athlete D: $$\text{BMI}_D = \frac{52 \text{ kg}}{(1.60 \text{ m})^2} = \frac{52}{2.56} \approx 20.313$$

The calculated BMIs are:

• Athlete A: $\boxed{\text{22.0}}$ (rounded to one decimal place)
• Athlete B: $\boxed{\text{25.5}}$ (rounded to one decimal place)
• Athlete C: $\boxed{\text{28.7}}$ (rounded to one decimal place)
• Athlete D: $\boxed{\text{20.3}}$ (rounded to one decimal place)

Question 1.1.3

Athlete C's BMI is approximately 28.7.
The BMI categories are:

• Underweight: <18.5
• Normal: 18.5–24.9
• Overweight: 25.0–29.9
• Obese: ≥30.0

Since $25.0 \le 28.7 \le 29.9$, Athlete C falls into the Overweight category.

Athlete C is classified as $\boxed{\text{Overweight}}$.

Question 1.1.4

• Athlete A: BMI $\approx 22.0$ (Normal)
• Athlete B: BMI $\approx 25.5$ (Overweight)
• Athlete C: BMI $\approx 28.7$ (Overweight)
• Athlete D: BMI $\approx 20.3$ (Normal)

Athletes B and C are both classified as Overweight, meaning their BMI is outside the normal range.

The two athletes who may require further health advice are $\boxed{\text{Athlete B and Athlete C}}$.