to long dijawab ya.

volume kubus = s×s×s = 14 cm ×14 cm×14 cm =2744 cm kubik
volume balok = p×l×t =20 cm × 14cm × 7 cm = 1960 cm kubik
volume kubus dan balok = 2744 cm kubik + 1960 cm kubik =4704 cm kubik

volume bangun pertama (kubus)
= s³
= 14³ cm
= 2744 cm³

volume bangun ke2 (balok)
= p x l x t
= 20 cm x 14 cm x 7 cm
= 1960 cm³

Volume seluruh
= volume 1 + volume 2
= 2744 cm³ + 1960 cm³
= 4704 cm³ (B)

semoga membantu :)