Gambar I : Bangun ruang balok

Panjang = $p$ = 36 cm

Lebar = $l$ =12 cm

Tinggi = $t$ = 12 cm

Volume balok = $p\times l\times t$

= $36\times12\times12$

= 5.184 cm³

Gambar II : Bangun ruang kubus

Panjang sisi = $s$ = 12 cm

Volume kubus = $s^3$ = $12^3$ = 1.728 cm³

Volume gabungan bangun ruang :

= Volume balok + Volume kubus

= 5.184 + 1.728

= 6.912 cm³