Respuesta :

akposevictor

Answer:

286.5 in.²

Step-by-step explanation:

The surface area of the prism = sum of the area of each surface

= (7.5*3) + (11.5*3) + (7.5*3) + (11.5*3) + (11.5*7.5) + (11.5*7.5)

= 22.5 + 34.5 + 22.5 + 34.5 + 86.25 + 86.25

Surface area = 286.5 in.²

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