Answer:
C. 10 ft.
Step-by-step explanation:
Area of 6 sq. ft. which is rectangular. The length is 3 ft and perimeter is l+l+w+w=perimeter. A rectangular shape has 2 sides of the same length and the other two are the same but, a different length the the other two sides.
Equation:
3+3+2+2=10
