To convert pounds (lbs) to kilograms (kg), you can use the following step-by-step instructions:

Step 1: Understand the conversion factor

1 lb is equal to approximately 0.45359237 kg. This is the conversion factor we will use to convert pounds to kilograms.

Step 2: Set up the conversion equation

To convert 42 lbs to kg, we can set up the equation as follows:

42 lbs * (0.45359237 kg/1 lb)

Step 3: Cancel out the units

In the equation, the unit “lbs” is present in both the numerator and denominator. By multiplying the value by the conversion factor, the unit “lbs” will cancel out, leaving us with the desired unit “kg”.

Step 4: Perform the calculation

Now, let’s calculate the conversion:

42 lbs * (0.45359237 kg/1 lb) = 19.05014754 kg

Step 5: Round the answer (if necessary)

In this case, the answer is already rounded to 8 decimal places. However, if you need to round it further, you can do so according to your desired level of precision.

Therefore, 42 lbs is approximately equal to 19.05 kg.