volume prisma abc.def disamping adalah

tinggi alas
t² = 29² - 20²
t² = 841 - 400
t² =441
t= √441
t = 21




V = Lalas × tprisma
V = ½ ×a × t ×tprisma
V = ½ × 21 × 20 × 40
V = 21 × 10 × 40
V = 8400