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KA = 10 + 24 + 26 = 60cm
LP= Ka.t + 2la
LP= 60 x 30 + 2 x 120cm² = 1800 + 240 = 2040cm²
b = 10 cm
c = 26 cm
Ka = a + b + c
= 24 cm + 10 cm + 26 cm
= 60 cm
a = 10 cm
t = 24 cm
La = 1/2 × a × t
= 1/2 × 10 cm × 24 cm
= 120 cm²
t = 30 cm
LP = 2(La) + (Ka × t)
= 2(120) + (60 × 30)
= 240 + 1800
= 2.040 cm²
Jadi luas permukaan prisma tersebut adalah 2.040 cm²