Multiple choice

A line is tangent to a circle with radius 5 cm. Distance between the centre of circle and the line m is

  1. 3 cm

  2. 4 cm

  3. 5 cm

  4. 6 cm

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

By definition, a tangent line to a circle is at a distance equal to the radius from the center of the circle.

AI explanation

The shortest distance from the center of a circle to a tangent line is exactly equal to the length of the radius. Since the radius is 5 cm, the distance from the center to line m is 5 cm.