help help meeeeeee dont understAND

Answer:
2776 is the surface area.
Step-by-step explanation:
19 x 48 = 912 x 2 = 1824. 7 x 19 = 133 x 2 = 266. 49 x 7 = 343 x 2 = 686.
Answer:
2762
Step-by-step explanation:
The formula is:
2*(width*length+height*lenght+height*width)
2*(19*48+7*48+7*19)
this equals 2762