tolong y no 30 plis pake cara !

v1 = p x l x t
= 28 x 20 x 16
= 8.960 cm3
V2 = p x l xt
= 28/2 x 20 x 8
= 14 x 20 x 8
= 2.240 cm3
V = 8.960 + 2.240 cm3
= 11.200 cm3 (d)