a)aflam diagonala bazei cu Pitagora BD=V(3600+6400)=V10000=100cm
apoi in tr.BDD' (drept.) avem DD'=V(67600-10000)=V57600=240cm
b)864litri=864dmcubi=864000cmcubi
Abazei=ABxBC=4800cmcubi
Vapa=Abazeixh(apa) => h(apa)=864000:4800=180cm
La punctul c nu stiu sigur