Plz guys I need ur help

see picture for a, 33.92  for b

Step-by-step explanation:

a net is like unfolded. since the base is a square, put a square in the middle with triangles coming off of all sides

(see picture below)

surface area =  base area + triangle area * 4

base area = 4 * 4 = 16

triangle area = 4*2.24 / 2 = 4.48

total area = 16 + 4 * 4.48 = 33.92