Question

3) Calcular a área e a diagonal de um quadrado cujo o lado mede 12,5 cm.​

Answer 1

$\large\boxed{\begin{array}{l}\underline{\rm \acute Area\,do\,quadrado\,de\,lado\,\ell}\\\sf A=\ell^2\\\underline{\rm Diagonal\,do\,quadrado\,de\,lado\,\ell}\\\sf d=\ell\sqrt{2}\end{array}}$

$\large\boxed{\begin{array}{l}\tt dados\begin{cases}\sf \ell=12,5\,cm\\\sf A=?\\\sf d=?\end{cases}\\\underline{\rm soluc_{\!\!,}\tilde ao\!:}\\\sf A=\ell^2\\\sf A=12,5^2\\\sf A=156,25\,cm^2\\\sf d=\ell\sqrt{2}\\\sf d=12,5\sqrt{2}\,cm\end{array}}$