Question

Sabendo que o volume de cada cubo é 125, 729 e 343 centímetros cúbicos respectivamente, determine a medida da aresta, e assinale a alternativa correspondente
A 15 cm; 9 cm e 7 cm
B 15 cm; 9 cm e 5 cm
C 5 cm; 9 cm e 7 cm
D 15 cm; 12 cm e 7 cm

Answer 1

Aresta do cubo $\huge\mathsf{\ell}$ em função do volume V

$\huge\boxed{\boxed{\boxed{\boxed{\mathsf{\ell=\sqrt[3]{V}}}}}}$

$\dotfill$

$\mathtt{a)}\huge\boxed{\boxed{\boxed{\boxed{\mathsf{\ell=\sqrt[3]{125}=5~cm}}}}}\\\mathtt{b)} \huge\boxed{\boxed{\boxed{\boxed{\mathsf{\ell=\sqrt[3]{729}=9~cm}}}}}\\\mathtt{c)}\huge\boxed{\boxed{\boxed{\boxed{\mathsf{\ell=\sqrt[3]{343}=7~cm}}}}}\\\huge\boxed{\boxed{\boxed{\boxed{\mathsf{\maltese~~alternativa~~A}}}}}$