Question

6. Calcule o volume da pirâmide cuja
altura é de 15 cm e cuja base
quadrada tem arestas de 20 cm de
comprimento

Answer 1

$\large\boxed{\begin{array}{l}\sf V=\dfrac{1}{3}\cdot B\cdot h\\\sf B\longrightarrow \acute area~da~base\\\sf h\longrightarrow altura\\\underline{\rm c\acute alculo~da~\acute area~da~base:}\\\sf B=\ell^2\\\sf B=20^2\\\sf B=400~cm^2\\\sf V=\dfrac{1}{3}\cdot B\cdot h\\\sf V=\dfrac{1}{\diagdown\!\!\!\!3_1}\cdot400\cdot\diagdown\!\!\!\!\!\!15^5\\\sf V=400\cdot5\\\sf V=2000~cm^3\end{array}}$