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What is the surface area of this shape?

I tried getting the answer twice and both times I got 228, which the teacher said was wrong.
(each cube is one inch squared)

What is the surface area of this shape I tried getting the answer twice and both times I got 228 which the teacher said was wrong each cube is one inch squared class=

Respuesta :

Step-by-step explanation:

the answer shoukd be 324

because in cube there are 6 sides

and one side contain 54 box

so... 54 × 6 = 324