Question

a área total de um cubo cuja diagonal mede 5√3 cm é? me ajudem pleaseeee!

Answer 1

$\sf d=a\cdot\sqrt{3}$

$\sf5\cdot\sqrt{3}=a\cdot\sqrt{3}$

$\sf a\cdot\sqrt{3}=5\cdot\sqrt{3}$

$\sf a=\dfrac{5\cdot\sqrt{3}}{\sqrt{3}}$

$\sf a=5$

$\sf A=6\cdot a^2$

$\sf A=6\cdot5^2$

$\sf A=6\cdot25$

$\boxed{\boxed{\sf A=150\,cm^2}}$