Final answer:
The surface area of a rectangular pyramid can be found with the formula A = s^2 + 4 · (1/2 · s · l), but the provided question lacks the slant height necessary to complete the calculation.
Step-by-step explanation:
The question is about calculating the surface area of a rectangular pyramid with equal sides. The surface area is the sum of the base area and the areas of the four triangular faces.
If the pyramid has a square base with side length s, and the slant height (the height of the triangular faces) is l, the surface area A can be found using the formula:
A = s2 + 4 · (1/2 · s · l)
However, further information is required to apply this formula since the student's question does not provide the slant height necessary to solve for A.
The reference to '11, 11, 11' suggests the pyramid may have a side length of 11 units, but without the slant height, we cannot proceed with the calculation.