A tangent is drawn from an external point ‘A’ to a circle of radius 12 cm. If the length of the tangent is 5 cm, then the distance from the centre of the circle to point ‘A’ is:
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. 13 cm
Given that
The radius of a circle (r )= 12 cm
The tangent length = 5 cm
By Pythagoras theorem
The distance from the center to point A = √(144 + 25) = √169 = 13 cm