363 square inches
step-by-step explanation:
surface area of a pyramid is b + 1/2ph
b is the area of the base: 11 x 11 = 121
p is the perimeter of the base: 11 + 11 + 11 + 11 = 44
h is the height of the pyramid: 11
121 + 1/2(44)(11)
121 + 242
363