Answer: 98ft²
Step-by-step explanation:
Area of front triangle = 4 × 3.5 × [tex]\frac{1}{2}[/tex]
Area of back triangle = Area of front triangle
Area of left side = 4 × 7
Area of right side = Area of left side
Area of bottom = Area of left side
Surface area = all sides added up = 98ft²
