Given two concentric circles with centre O. A line cuts the circles at A, B, C and D respectively. Lf AB=10 cm, find the length of CD.

Given two concentric circles with centre O. A line cuts the circles at

1.	Given two concentric circles with centre O. A line cuts the circles at A, B, C and D respectively. Lf AB=10 cm, find the length of CD.
A.	5 cm
B.	10 cm
C.	7.5 cm
D.	15 cm
Answer» C. 7.5 cm

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Given two concentric circles with centre O. A line cuts the circles at A, B, C and D respectively. Lf AB=10 cm, find the length of CD.

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