How many pounds are in 2.1 kg? (Hint: 2.20 lb= 1kg)
The correct answer and explanation is:
To convert kilograms to pounds using the given hint that 1 kg equals 2.20 lb, you simply multiply the number of kilograms by 2.20.
The formula for the conversion is: Mass in pounds=Mass in kg×2.20\text{Mass in pounds} = \text{Mass in kg} \times 2.20
Given that the mass is 2.1 kg, the calculation becomes: 2.1 kg×2.20=4.62 lb2.1 \, \text{kg} \times 2.20 = 4.62 \, \text{lb}
So, 2.1 kg is equivalent to 4.62 pounds.
Explanation:
Mass can be expressed in different units depending on the system being used. In the metric system, mass is commonly measured in kilograms (kg), while in the imperial system, mass is typically measured in pounds (lb). To convert between these systems, it is essential to know the appropriate conversion factor. In this case, 1 kilogram is equivalent to 2.20 pounds.
The conversion is straightforward. The mass in kilograms (2.1 kg) is multiplied by the conversion factor (2.20 lb/kg). This method ensures that the mass is correctly converted to pounds, allowing comparisons or further calculations to be made in the imperial system.
Such conversions are important in various fields, including science, engineering, and everyday activities like weight measurement. For example, when traveling internationally or working with different scientific disciplines, being able to convert between kilograms and pounds quickly is useful.
The calculation can also be reversed to convert pounds back to kilograms by dividing the mass in pounds by 2.20. This process is essential for maintaining consistency and accuracy when working with different units of measurement in global or scientific contexts.