What decimal value is 3 feet 6 inches expressed as in feet?

• A. 3.5
• B. 3.0
• C. 4.0
• D. 3.25

Answer: (A)

Expressing length in feet as a decimal means the fractional part of the feet represents inches. Since there are 12 inches in a foot, 6 inches is 6/12 = 0.5 of a foot. So 3 feet plus 0.5 foot equals 3.5 feet. The decimal value is 3.5. For context, 3.0 would be just 3 feet with no inches, 3.25 would be 3 feet 3 inches, and 4.0 would be 4 feet with no inches.