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DE/PQ = 9/15 = 3/5
EF/QR = 12/20 = 3/5
jawaban B
27. g² = d²-(r1+r2)²
24²=26²-(6+r2)²
576=676-(6+r2)²
576-676=-(6+r2)²
-100=-(6+r2)²
100=(6+r2)²
√100 = √(6+r2)²
10 = 6 + r2
r2 = 10-6 = 4 cm
jawaban B