1.

Two chords, AB and CD of circle meet at a point O, outside the circle. It is given that AB = 7 cm, CD = 4 cm, OB = 5 cm. What is the length of OD?

A. 5 cm
B. 6 cm
C. 7.5 cm
D. 10 cm
Answer» C. 7.5 cm


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