Respuesta :

8*5=40
8*5=40
12*5=60
12*5=60
12*8=96
12*8=96
Now add the products up.
80+120+96+96
392 is the answer. Hope this helps. (it is C.)
SA of rectangular prism can be found using the formula:

SA = 2(lw + hw + hl)
SA = 2(12*8 + 5*8 + 5*12)
SA = 2(196)
SA = 392 in²

Hope this helps :)

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