Формула объема = a*b*h
160 cm3 *30 cm3 * 20 cm3 = x x = 96000 cm3
90 dm * 70 dm * x = 6300 dm3 x = 1 dm
50 m * x * 4 m = 8000 m3 x = 40 m
40 mm * 80 mm * 30 mm = x x = 96000 mm3
20 cm * 40 cm * x = 3200 cm3 x = 4 cm
120 dm * 40 dm * 30 dm = x x = 144000 dm3