To convert 9 centimeters (cm) to inches (in), we need to use the conversion factor of 1 cm = 0.3937 inches. This means that for every 1 cm, there are 0.3937 inches.
Step 1: Write down the given value
Write down the given value of 9 cm.
Step 2: Set up the conversion equation
Since we know that 1 cm = 0.3937 inches, we can set up the equation as 9 cm x (0.3937 in/1 cm). The conversion factor is written as a fraction with the unit we want to convert to (inches) in the numerator and the original unit (cm) in the denominator.
Step 3: Cancel out the units
We can cancel out the unit of cm from both the numerator and denominator, leaving us with 9 x 0.3937 in.
Step 4: Solve for the final answer
Multiply 9 and 0.3937 to get the final answer of 3.5433 inches. This means that 9 cm is equivalent to 3.5433 inches.
Step 5: Write the final answer
Write the final answer with the appropriate unit as 3.5433 in.
Therefore, 9 cm is equal to 3.5433 inches. To double check our answer, we can also use a calculator to divide 9 by 2.54 (since 1 inch is equal to 2.54 cm) and we should get the same answer of 3.5433.