Answer:
These are all right answers, just pick the one that matches an answer choice
n^2 * (n-1)/3
(n^3-n^2)/3
((n-1)n^2)/3
Step-by-step explanation:
The general area for a square pyramid is base * height/3
Since we know the edge is n units, we can subsitute the base for:
n*n = n^2 = b
The height is n-1, so lets plug that into the formula too:
n^2 * (n-1)/3
Its a bit hard to tell what the answer choices are, since your formatting is a bit strange, So in the answer section, I will list a couple of different expressions that are all equal, so that I get the right answer choice included.
