The diameter of a circle is 42 cm. What is the difference between the lengths of the circumference and the radius of the circle? [Use π = 22/7]
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 111.
Circumference of the circle = 2 × (π) × radius
Radius = Diameter/2 = 42/2 = 21
thus, Circumference of the circle = 2 × (22/7) × 21 = 132
Difference between circumference and the radius = 132 - 21 = 11