Question

What is the perimeter of semicircle. if area of circle is 154 cm² and diameter of circle and semicircle is same?.
1. 45 cm
2. 22 cm
3. 36 cm
4. 18 cm

Answer 1

Correct Answer - Option 3 : 36 cm

Given:

Area of circle = 154 cm²

Calculation:

⇒ π × r² = 154, r = 7 cm

⇒ Perimeter of semicircle = 2r + πr

⇒ (2 × 7) + (22 × 7)/7 = 36 cm

∴ The required result will be 36 cm.