In the given figure, AC is perpendicular to tangent CB. AB passes through the centre O of the circle whose radius is 20 cm. If AC = 36 cm, what is the length (in cm) of BC?
1
32
2
20
3
15
4
27
In the given figure, AC is perpendicular to tangent CB. AB passes through the centre O of the circle whose radius is 20 cm. If AC = 36 cm, what is the length (in cm) of BC?