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Answer :
Final answer:
To convert 30.4 lb to kilograms, multiply by the conversion factor of 0.4536 kg/lb. The result is approximately 13.789 kg, rounded to 13.8 kg to match the least precise measurement. So, the correct answer is 13.8 kg.
Explanation:
To calculate how many kilograms are in 30.4 lb, we follow a simple conversion process using the fact that 1 lb is equivalent on Earth to a mass of 0.4536 kg. To find the equivalent mass in kilograms, you simply multiply the given mass in pounds (30.4 lb) by this conversion factor. Thus, your calculation would be 30.4 lb * 0.4536 kg/lb.
The lb units cancel out, leaving you with a result in kg. The calculation gives a result of approximately 13.789 kg, but given the least precise measurement was expressed to the 0.1 decimal place, we round our answer similarly, arriving at 13.8 kg.
So, the correct answer choice would be A: 13.8 kg.
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30.4 pounds is approximately equal to 13.8 kg and the closest answer choice here is A. 13.8 kg.
The question is asking to convert a weight from pounds to kilograms. To convert pounds to kilograms, we use the conversion factor that 1 pound is approximately equal to 0.45359237 kilograms. So converting 30.4 pounds to kilograms will involve multiplying 30.4 by 0.45359237.
Performing this calculation, 30.4 lb × 0.45359237 kg/lb gives us approximately 13.78977 kg. Now, according to the principle of significant figures, we need to round our answer to the least precise measurement, which in this case is indicated as 13.7 kg. As 13.7 kg is expressed to the 0.1 decimal place, our final answer should also be expressed to the 0.1 decimal place. Therefore, 30.4 pounds is approximately equal to 13.8 kg and the closest answer choice here is A. 13.8 kg.
