Respuesta :

Area of the base square = 18 x 18 = 324 m²

Area of the 4 lateral rectangle = 4 x 18 x 40 = 2880 m²

Area of the 4 triangle = 4 x 1/2 x 18 x 13 = 468 m²

Total Area = 324 + 2880 + 468 = 3672 m²

Answer:  3672 m²