assuming the prisim is a rectangular prisim,
surface area=area of 4 sides+2(area of top)
height=4
width is 16
legnth=4
asuming the side areas are 4 times 16, the total side area is 4 itmes 4 times 16 or 256
then the tops are 4 times 4 times 2=32
so the total surface area is 256+32=288 square units