Correct Answer - Option 2 : 44 cm
Given:
Area of a circle = 154 cm2
Formula used:
Area of a circle = πr2
Circumference of a circle = 2πr
Calculation:
πr2 = 154
⇒ 22/7 × r2 = 154
⇒ r2 = 154 × 7/22 = 72
⇒ r = 7
∴ Circumference of a circle = 2 × 22/7 × 7 = 44 cm