To convert kilometers (km) to miles (mi), you can use the following step-by-step instructions:
Step 1: Understand the conversion factor
1 kilometer is equal to 0.621371 miles. This conversion factor will be used to convert kilometers to miles.
Step 2: Set up the conversion equation
Let’s denote the number of kilometers as “x” and the number of miles as “y”. The conversion equation can be written as:
x kilometers = y miles
Step 3: Substitute the known values
In this case, we know that we want to convert 20 kilometers to miles. So, we substitute x = 20 into the equation:
20 kilometers = y miles
Step 4: Solve for y
To find the value of y (miles), we need to solve the equation. Multiply both sides of the equation by the conversion factor (0.621371):
20 kilometers * 0.621371 = y miles
Step 5: Calculate the result
Using a calculator or by hand, multiply 20 by 0.621371:
12.42742 = y miles
Step 6: Round the result
Since miles are typically rounded to two decimal places, round the result to:
y ≈ 12.43 miles
Therefore, 20 kilometers is approximately equal to 12.43 miles.