well, is very plain vanilla.
notice, the square pyramid has a square on its base, thus is called that, the base is 4x4 in area.
it also has 4 triangular faces, each triangle has a base of 4 and an altitude or height of 6.
sum up the area of the base and the triangular faces, and that's the total area of the pyramid.
[tex]\bf \stackrel{\textit{square's area}}{(4\cdot 4)}~~+~~\stackrel{\textit{4 triangular faces' area}}{4\left[\frac{1}{2}(4)(6) \right]}[/tex]
