Question

Find the volume of a square pyramid with slant height = 13cm, and base edges = 10cm

Answer 1

Check the picture below

notice, is a "square" pyramid, so its base is a square,if one edge is 10, all are 10

$\bf \textit{volume of a pyramid}\\\\ V=\cfrac{1}{3}Bh\qquad \begin{cases} B=\textit{base area}\\ h=height\\ ------\\ B=10\cdot 10\\ h=12 \end{cases}\implies V=\cfrac{1}{3}(10\cdot 10)12$