A square pyramid is a pyramid having a base as square. It has five sides and hence it is also called as pentahedron. It is s pyramid with four triangular faces, five vertices, and eight edges. The top point standing right above the base, connecting all the triangular faces is called as apex. Refer the below surface area of a square pyramid formula and calculate SA based on base and slant height. Also use online calculator given below to perform the calculations just by entering the values.