A line touches a circle of radius 4 cm. Another line is drawn which is tangent to the circle. If the two lines are parallel then distance between them is
A
4cm
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B
6cm
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C
7cm
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D
8cm
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Solution
The correct option is D8cm Distance of tangent from the centre=Radius=2cm. Therefore distance of AB from centre=Distance of CD from centre=4cm. Distance between AB and CD=2×Radius =8cm