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Ronald is 55 years old and weighs 186 pounds. He is 6 feet tall. What is his BMI?

A. [tex]$28.16 \, \text{kg/m}^2$[/tex]
B. [tex]$37.12 \, \text{kg/m}^2$[/tex]
C. [tex]$26.25 \, \text{kg/m}^2$[/tex]
D. [tex]$25.22 \, \text{kg/m}^2$[/tex]
E. [tex]$35.49 \, \text{kg/m}^2$[/tex]

Answer :

First, we convert Ronald's weight from pounds to kilograms and his height from feet to meters.

1. Convert weight to kilograms:

[tex]$$
\text{weight in kg} = \frac{186 \text{ lbs}}{2.20462} \approx 84.37 \text{ kg}
$$[/tex]

2. Convert height to meters:

[tex]$$
\text{height in m} = 6 \text{ ft} \times 0.3048 \text{ m/ft} \approx 1.8288 \text{ m}
$$[/tex]

3. Calculate the Body Mass Index (BMI) using the formula:

[tex]$$
\text{BMI} = \frac{\text{weight in kg}}{(\text{height in m})^2}
$$[/tex]

Substitute the values:

[tex]$$
\text{BMI} \approx \frac{84.37}{(1.8288)^2} \approx \frac{84.37}{3.344} \approx 25.23 \text{ kg/m}^2
$$[/tex]

Rounding to two decimal places, Ronald's BMI is approximately

[tex]$$
\boxed{25.22 \text{ kg/m}^2}
$$[/tex]

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