A circular PAF badge has radius 7 cm. Using pi equals 22 over 7, what is its circumference?
Q1. A circular PAF badge has radius 7 cm. Using pi equals 22 over 7, what is its circumference?
Answer: 44 cm
Explanation: Circumference is 2 pi r. Substituting pi as 22 over 7 and r as 7 gives 44 cm.