tolong dibantu ya... please...

Luas permukaan prisma
= 2 x Luas alas + Keliling alas x Tinggi prisma
= 2 x 1/2 x a x t + (a + b + c) x Tinggi prisma
= 2 x 1/2 x 6 cm x 8 cm + (6 cm + 8 cm + 10 cm) x 14 cm
= 48 cm² + 24 cm x 14 cm
= 48 cm² + 336 cm²
= 384 cm²