sebuah prisma segi tiga siku siku memiliki tinggi 10 cm panjang sisi alasnya berturut turut adalah 3 cm ,4cm dan 5 cm ?
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Mencari luas permukaan
Lp = L1 + L2 + L3
MAKA
L1 = t × sisi alas
= 10 × 3
= 30 cm
L2 = 10 × 4 = 40 cm
L3 = 10 × 5 = 50 cm
Lp = 30 + 40 + 50 cm
Lp = 120 cm²