To convert 84cm to inches, you will need to use the conversion factor of 1 inch = 2.54cm. This means that for every 1 inch, there are 2.54cm.
Step 1: Write down the given value of 84cm.
Step 2: Set up a conversion factor ratio with the given value on one side and the unit you want to convert to on the other side. In this case, the ratio will be 84cm/1 inch.
Step 3: Multiply the given value by the conversion factor ratio. This will cancel out the cm unit and leave you with the value in inches.
84cm x (1 inch/2.54cm) = 33.07 inches
Step 4: Round off the value to the appropriate number of significant figures. Since the given value has 2 significant figures, round off the final answer to 2 significant figures as well.
33.07 inches rounded off to 2 significant figures is 33 inches.
Therefore, 84cm is equal to 33 inches.
In summary, to convert cm to inches, you need to multiply the given value by 1 inch divided by 2.54cm. This will give you the value in inches, which can be rounded off to the appropriate number of significant figures. Remember to always set up the conversion factor ratio with the given value on one side and the unit you want to convert to on the other side.