no 30 tolong bsk dikumpul pake cara

V1+V2=V total
p1^l1^t1+p2^l2^t2=V total
12^5^4+15^4^6=V total
240+360=V total
600cm3=V total

bangun 1 (yg tegak) :
= p×l×t
= 5 cm × 4 cm × 12 cm = 240 cm³

bangun 2 :
= p×l×t
= 15 cm × 4 cm ×6 cm = 360 cm³

bangun 1+bangun2 = 600 cm³

semoga membantu :)