alas prisma siku siku dg panjang 12cm,5cm,13cm dg tinggi 20cm berapakah luas permukaan prisma tsb ?

Lp prisma = 2L.alas + K.alas × t
= 2×1/2×12×5 + (12+5+13) × 20
= 60 + 30×20
= 60 + 600
= 660cm²

L. alas = 1/2 x alas x tinggi
= 1/2 x 12 x 5
= 30cm²

L. Permukaan = (2La) + (tinggi prisma x kll.)
= 2(30) + (20 x (12 + 5 + 13))
= 60 + (30 x 20)
= 60 + 600
= 660 cm²

maaf kalo salah