Jawabanmu

2015-05-18T15:40:32+07:00
20 x 15 x 30 + 35 x 15 x 22 = 9000 + 11550 = 20550 cm3

2015-05-18T16:06:24+07:00
Bangun 1 = 20 × 15 × 30 = 300 × 30 = 9000 cm
Bangun 2 = 35 × 15 × 22 = 525 × 22 = 11,550 cm

Volume seluruhnya = 9000 + 11,550 = 20,550 cm