volume limas adalah...

Volume limas
= 1/3 La t
= 1/3 (a.t) t
= 1/3 (20 cm × 15 cm) × 12 cm
= 1/3 × 300 cm² × 12 cm
= 1.200 cm³ (b)

Volume limas
= 1/3 × L.alas × t.limas
= 1/3 × (20×15) × 12
= 1200 cm³