[tex]V_{szescianu} = V_{graniastoslupa} = 12^{3} = 1728 cm^3\\V_{graniastoslupa} = P_p * H\\1728 cm^3 = P_p * 48cm\\P_p = 36cm^2\\P_p = {krawedz_{boczna}}^2 = ({k_b}^2)\\36cm^2 = {k_b}^2\\k_b = \sqrt{36cm^2} \\k_b = 6cm\\P_b = 4 * (6cm * 48cm) = 1152cm^2\\P_c = 2*P_p + P_b = 2*36cm^2 + 1152cm^2 = 1224cm^2 - odpowiedz[/tex]
