Here is the solution based on the given problem above.
Given: 3 feet and 5 inches
? = decimal feet rounded to the nearest hundredth
1 foot = 12 inches
5 inches in 1 foot is 5/12. So in fraction, it will be 3 5/12 feet. Let's simplify this and the result is 41/12. To convert this to decimal, we divide e 41 by 12 and the result is 3.41666. Round it off and the final answer would be 3.42. So 3 feet and 5 inches is 3.42 feet.