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b.panjang PR = √ PQ² + QR²
= √ 8² + 6²
= √ 64 + 36
= √100
= 10 cm
c. panjang TR = √PR² + TP²
= √10² + 5²
= √100 + 25
= √125
= 5 √5
mohon di koreksi ya gambarnya kurang jelas kulihat. semoga membantu