To convert 13 cm to inches, you will need to use a conversion factor since these are two different units of length. The conversion factor for cm to inches is 1 cm = 0.3937 inches. This means that every 1 cm is equivalent to 0.3937 inches.

Step 1: Write down the given value of 13 cm.

13 cm

Step 2: Write down the conversion factor.

1 cm = 0.3937 inches

Step 3: Set up the conversion equation using the given value and the conversion factor.

13 cm x (1 inch/ 0.3937 cm)

Step 4: Cancel out the common unit, which is cm in this case.

13 x (1 inch/ 0.3937)

Step 5: Simplify the equation by dividing 13 by 0.3937.

13 / 0.3937 = 33.02

Step 6: Add the unit of inches to the final answer.

33.02 inches

Step 7: Round the final answer to the appropriate number of significant figures, if needed.

Since the given value has two significant figures, the final answer should also have two significant figures. 33.02 rounded to two significant figures is 33 inches.

Step 8: Write the final answer in the proper format.

13 cm = 33 inches

Therefore, 13 cm is equivalent to 33 inches. Remember to always double-check your work and include the proper unit in your final answer.