Please answer this with correct answer

  (a)  1232 m²

Step-by-step explanation:

The surface area is the total of the areas of the two triangular ends and the three rectangular faces.

Each triangle area is ...

  A = 1/2bh

  A = 1/2(24 m)(7 m) = 84 m²

The sum of the areas of the rectangular faces is ...

  A = LW . . . for each of the 3 faces

  A = (19 m)(24 m) +(19 m)(7 m) +(19 m)(25 m) = (19 m)(24 +7 +25 m)

  A = (19 m)(56 m) = 1064 m²

Then the total surface area is ...

  A = lateral area + base area

  A = 1064 m² + 2(84 m²) = 1232 m² . . . . total surface area

1/800 is the right answer