bantu no 8 pake cara

1/2 x 3 x 4 x 15 = 90

Volume = Luas alas x tinggi prisma
V = 1/2 x a x t x tinggi prisma
V = 1/2 x (1/2 x 6cm) x 4 cm x 15 cm
V = 1/2 x 3 cm x 4 cm x 15 cm
V = 90 cm³