Answer:
D
Step-by-step explanation:
The length of the sidewalk is 25 + 4 + 4 = 33 ft
The width of the sidewalk is 4 ft
area of top/ bottom = 2(4 × 33) = 2 ×132 = 264 ft²
→ Note this area includes the 4 corners ←
area of 2 sides = 2(4 × 9) = 2 × 36 = 72 ft²
area of sidewalk = 264 + 72 = 336 ft² → D
