Question

A base de uma pirâmide de 6 cm de altura é um qudrado de 8 cm de perímetro . Calcule seu volume

Answer 1

$\boxed{\begin{array}{l}\sf p=4\ell\\\sf4\ell=8\\\sf\ell=\dfrac{8}{4}\\\sf\ell=2~cm\\\sf B=\ell^2\\\sf B=2^2\\\sf B=4~cm^2\\\sf V=\dfrac{1}{3}\cdot B\cdot h\\\\\sf V=\dfrac{1}{\diagdown\!\!\!3}\cdot 4\cdot\diagdown\!\!\!6\\\\\sf V=2\cdot4\\\sf V=8~cm^3\end{array}}$