Respuesta :

763396

Answer:

248m^2

Step-by-step explanation:

SA = 2(lw + wh + lh)

     = 2(4m*6m+6m*10m+4m*10m)

     = 2(24m^2+60m^2+40m^2)

     = 2(124m^2)

     = 248m^2

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