Final answer:
To convert 225 pounds to kilograms, divide by the conversion factor of 2.205 pounds per kilogram, which approximately equals 102 kg. The result is adjusted to maintain significant figures, leading to a precise answer of 102.0 kg.
Step-by-step explanation:
To convert a weight from pounds to kilograms, we use the conversion factor that 1 kilogram is approximately equal to 2.205 pounds. When converting 225 pounds to kilograms, we divide the number of pounds by this conversion factor. Therefore, the calculation will be:
225 lbs ÷ 2.205 lbs/kg = approximately 102 kg (rounded to the nearest whole number for simplicity).
However, when dealing with significant figures, we must consider the precision of the given data. Since 2.205 is to three decimal places, and the original weight is given as a whole number, we should match the precision to the least precise measurement. Therefore, when 225 lbs is divided by 2.205, the result should be expressed to the nearest tenth as the inexact number dictates the number of significant figures in the answer. Thus, the precise answer is 102.0 kg to maintain the significant figures.