In a circle, AB and DC are the two chords. When AB and DC are produce. They meet at P. If PC = 5.6 cm, PB = 6.3 cm and AB = 7.7 cm, then the length of CD is?
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In a circle, AB and DC are the two chords. When AB and DC are produce. They meet at P. If PC = 5.6 cm, PB = 6.3 cm and AB = 7.7 cm, then the length of CD is?