Odpowiedź:
a) V= 1/3 * Pp * h | Pp- pole podstawy
Pp=(9+12)/2 *4 = 21 *2 = 42 cm2
V = 1/3 * 42 *16 = 224 cm3
b)
Pp = 25*36/2 = 450 cm2
V = 1/3 * 450 * 53 = 7950 cm3 = 0,795 m3
c)
0,8 m = 80 cm
6 dm = 60 cm
Pp= 1/2 * 48 * 60 = 1440 cm2
V = 1/3 * 1440 *80 = 38400 cm3 = 3,84 m3