The ratio of the circumference and diameter of a circle is 3 : 5. If the circumference is 6 cm, then the radius of the circle is:
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 5 cm.
Circumference : Diameter
3 5
3 × 2 = 6 5 × 2 = 10
Radius = 10/2 = 5 cm