jawab yg bener make cara

V limas segi empat = 1/3 x 9 x 9 x 10 = 270 cm³
V Balok = 18 x 10 x 9 (18:2) = 1620 cm³
= 270 cm³ + 1620 cm³ = 1890 cm³

v balok = P x L x T
= 18 x 10 x 9
= 1620
V limas = 1/3 x P x L x T
= 1/3 x 9 x 9 x 10
= 1/3 x 810
= 270
→ 1.620 + 270 = 1890