Formula to solve for surface area of the square Pyramid

The formula to solve for the surface area of a square pyramid is:

SA = B + (1/2)Pl

where SA is the surface area, B is the area of the base, P is the perimeter of the base, and l is the slant height.

To break it down further:

- B = s^2, where s is the length of the side of the square base
- P = 4s, since there are four sides to a square
- To find l, use the Pythagorean theorem: l^2 = h^2 + (s/2)^2, where h is the height of the pyramid
- Then, plug in the values and simplify the equation to find the surface area.