Easy
Diameter of a circle is 42 cm, then the circumference of this circle will be -
Explanation
Explanation
The circumference of a circle is calculated using the formula π × diameter, using π ≈ 22/7. So circumference = (22/7) × 42 = 22 × 6 = 132 cm (since 42 ÷ 7 = 6). So the correct answer is 132 cm, option (1).
PRO TIP
Re-check your working by substituting the answer back into the original question.