Respuesta :

PewDiePie93

Answer:

440 ft.²

Step-by-step explanation:

Surface area of the object = 2 (lw + wh + hl) = 2 (10× 6 + 6 × 10 + 10 × 10)

                                           = 2 ( 60 + 60 + 100) = 2 × 220 = 440 ft.²