Question

Area of a circle is 154 m². Find out the perimeter of circle?
1. 14 cm
2. 44 m²
3. 44 m
4. 7 m

Answer 1

Correct Answer - Option 3 : 44 m

Given:

Area of circle = 154 m²

Formula used:

Area of circle = πr²

Perimeter of circle = 2πr

Calculation:

πr² = 154 m²

⇒ (22/7) × r² = 154 m²

⇒ r² = 7 × 7

⇒ r = 7 m

Perimeter of circle = 2 × (22/7) × 7 m

⇒ 44 m

∴ The perimeter of circle is 44 m