tolong antu aku ya kk...soalnya ini buat besok...plies yh kk

2.
Volume balok = p×l×t = 21×9×12 = 2268
Volume limas = 1/3×p×l×t = 1/3×21×9×12 = 2268/3 = 756
Volume Gabungan = 2268+756 = 3024 cm
3.
Volume kubus = r×r×r = 23×23×23 = 12167
Volume limas = 1/3×p×l×t = 1/3×23×23×15 = 7935/3 = 2645

#maaf kalo salah