jawab no 28, 29 dan 30

28). D
29). V. kubus = 5x5x5 = 125cm3
V. limas segi empat = 1/3 x (5x5) x 3cm = 1/3 x 25cm x 3cm= 25cm3

V. semuanya = 125cm3 + 25cm3 = 150cm3 (C)

30). V. balok = pxlxt
= 210cm x 120cm x 50cm = 1.260.000 cm3 = 1.260 liter (B)


Semoga membantu :)