The expression "5 5" is ambiguous and can be interpreted in two ways:

5 + 5: If you meant to add 5 and 5, the answer would be 10 inches.

5 feet 5 inches: If you meant to represent a height of 5 feet and 5 inches, then the total length in inches would be:

Convert feet to inches: 5 feet * 12 inches/foot = 60 inches

Add the remaining inches: 60 inches + 5 inches = 65 inches
Therefore, depending on the interpretation, "5 5" could be either 10 inches or 65 inches. If you can provide more context or clarify your intent, I can give you a more precise answer.