Answer: The length must be at least 95 ft. squared. Pick the line with the filled in left circle, and the right side is an arrow. Put the left side that's filled in on 95 (middle line between 90 and 100).
Step-by-step explanation: Divide the minimum total area by the minimum width. The answer is the minimum length.
Length x Width = Area
20 ft. x 95 ft. = 1900 ft. sq