52.1 kg = __ lb (round the answer to the nearest tenth).
a. 23.7
b. 23.68
c. 24
d. 114.62
e. None are correct
The Correct Answer and Explanation is:
To convert kilograms (kg) to pounds (lb), we use the conversion factor:
1 kilogram (kg) = 2.20462 pounds (lb).
Step-by-Step Calculation:
To convert 52.1 kg to pounds:
[
52.1 \, \text{kg} \times 2.20462 \, \frac{\text{lb}}{\text{kg}} = 114.6201 \, \text{lb}.
]
Rounding:
Now, rounding 114.6201 to the nearest tenth:
[
114.6201 \approx 114.6 \, \text{lb}.
]
Conclusion:
The correct answer is 114.6 lb, but since this option is not listed among the choices, the answer is e. None are correct.
Explanation:
- The conversion from kilograms to pounds is based on the standard conversion factor of 2.20462, which gives an accurate result when multiplying the weight in kilograms by this factor.
- It is essential to apply proper rounding rules. In this case, rounding 114.6201 to the nearest tenth results in 114.6 lb.
- The other options listed (a. 23.7, b. 23.68, c. 24, d. 114.62) either don’t match the correct converted value or don’t reflect the appropriate rounding to the nearest tenth.
This conversion is frequently used in medical, scientific, and everyday contexts, as weight in kilograms is common worldwide, but pounds are often used in countries like the United States. Always remember to double-check your units and rounding when converting measurements.