Luas permukaan prisma pada gambar diatas adalah?

sisi miring segitiga = x
x² = 8² + 15²
x² = 64 + 225
x² = 289
x = √289
x = 17 cm

La = 1/2 x a x t
La = 1/2 x 8 x 15
La = 60 cm²

Ka = s + s + s
Ka = 8 + 15 + 17
Ka = 40 cm

Lp = (2.La) + (Ka.t)
Lp = (2.60) + (40.20)
Lp = 120 + 800
Lp = 920 cm²