Question

The area of a circle is 154 cm². So what is the circumference of this circle?
1. 44 cm
2. 308 cm
3. 7 cm
4. 35 cm

Answer 1

Correct Answer - Option 1 : 44 cm

Given:

The area of the circle is 154 cm²

Concept:

The area of the circle = π × (Radius of the circle)²

Calculation:

Let be assume the radius of the circle is r

⇒ π × r² = 154

⇒ r = 7 cm

⇒ Circumference of the circle = 2 × π × r = 2 × (22/7) × 7 = 44 cm

∴ The required result will be 44 cm.