volume gabungan bangun datar disamping adalah..

v1 = 8 x 8 x 8 = 512cm3
v2 = 15 x 8 x 12 = 1440 cm3
volume gabungan = 512 cm3 + 1440 cm3 = 1952cm3 = d
semoga membantu

V kubus = s x s x s
= 8x8x8
=512
Tinggi balok = 20-8=12 cm
V balok = p x l x t
= 15x8x12
=1140
V gab = 512+1440
=1952