Volume bangun tersebut adalah..

V1 = 8x10x18 = 1.440
V2 = 9x10x18 = 1620 x 1/2 = 810
VB = 1440+810 = 2.250cm³

V 1 =p×l×t
=8 Cm × 10 Cm × 18 Cm
=80 Cm² ×18 Cm
=1.440 Cm³

V 2=p×l×t × 1/2
=9 Cm × 10 Cm × 18 Cm × 1/2
=90 Cm² × 18 Cm × 1/2
=1.620 Cm² × 1/2
= 810 Cm³

Voume bangun =1.440 Cm³ + 810 Cm³
=2.250 Cm³

Semoga membantu!!!!!