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b = 16 cm
a² + b² = c²
30² + 16² = c²
900 + 256 = c²
1156 = c²
√1156 = √c²
34 = c
LP = (2 × La) + (Ka × t)
= (2 × 1/2 × a × t) + ((a + b + c) × t)
= (2 × 1/2 × 16 × 30) + ((30 + 16 + 34) × 20)
= (2 × 240) + (80 × 20)
= 480 + 1600
= 2080 cm²
Jadi luas prisma tersebut adalah 2080 cm²
= akar dr 256+900
= √1156 = 34 cm
jadi,
Lp prisma = 2.L alas + K alas.t prisma
= 2.1/2.a.t + (s+s+s).20
= 2.1/2.16.30 + (16+30+34).20
= 480 + 80.20
= 480 + 1600
= 2080 cm²