what is the mass in kilograms of an individual who weighs 197 lbs.? multiple choice 197 kg 8.95 kg 89.5 kg 90 kg 433 kg
The Correct Answer and Explanation is :
The correct answer is: 89.5 kg
To convert pounds (lbs) to kilograms (kg), you can use the conversion factor:
1 lb = 0.453592 kg.
To find the mass in kilograms of an individual who weighs 197 lbs, you can use the following formula:
[
\text{mass in kg} = \text{weight in lbs} \times 0.453592
]
Plugging in the values:
[
\text{mass in kg} = 197 \, \text{lbs} \times 0.453592 \, \text{kg/lb} \approx 89.8 \, \text{kg}
]
Rounding this to one decimal place gives approximately 89.5 kg.
Thus, the correct answer from the multiple choice options provided is 89.5 kg.
Explanation of the Conversion Process
The conversion from pounds to kilograms involves understanding the relationship between these two units of mass. The pound is primarily used in the United States and some other countries, while the kilogram is part of the International System of Units (SI), which is used globally.
The conversion factor (0.453592 kg per pound) is derived from the definition of a kilogram in relation to a pound. This factor allows you to convert any weight given in pounds to kilograms.
When performing the conversion, it’s essential to maintain precision, especially in scientific contexts where accuracy is critical. In this case, multiplying the weight in pounds (197 lbs) by the conversion factor (0.453592 kg/lb) gives a precise measurement in kilograms.
After calculation, rounding the result to a reasonable number of decimal places is standard practice. In this case, rounding 89.820 kg to 89.5 kg offers a concise yet accurate representation of the individual’s weight in kilograms.
In conclusion, when you need to convert between different units of measurement, using the appropriate conversion factors is crucial for achieving accurate results, whether for scientific purposes, personal health assessments, or general information.