Question

Please if you can help me I'm so lost sorry! xp

Answer 1

The surface area would be 340 ft

Answer 2

340

Explanation:

Take all sides such as (13x4), (5x12), (5x4), (12x4), then multiply them by the amount of times they are used again, which is twice except for (5x4). So 13x4x2+5x12x2+12x4x2=X.