a) 4dm * 3dm = 12dm
12dm * 2 = 24dm
2dm * 3dm = 6dm
6dm * 2 = 12dm
4dm * 2dm = 8dm
8dm * 2 = 16dm
24dm +12dm+16dm =52dm- szkło
4 * 4dm = 16dm
4 * 2dm = 8dm
4 * 3dm = 12dm
16dm + 8dm +12dm = 36dm-kątownik
b) V= 4dm * 2dm * 3dm
V= 24dm^3 (sześcienne)
24dm^3 = 24 L