Answer:
SA = 299600 m²
Step-by-step explanation:
Equation for the surface area of a prism:
SA = 2 * Area of base + Perimeter of base * height
1. Perimeter of the base: 280 * 5 = 1400 m
2. Area of the base: 0.5 * apothem * perimeter -> 0.5 * 192 * 1400 = 134400 m²
Plug in: SA = 2 * 134400 + 1400 * 22 -> SA = 268800 + 30800 ->
SA = 299600 m²
