If the area of semi-circle is 77 square cm then find the perimeter of

1.	If the area of semi-circle is 77 square cm then find the perimeter of semicircle?1. 36 cm2. 35 cm3. 32 cm4. 30 cm
Answer» Correct Answer - Option 1 : 36 cm Given: Area of semi-circle is 77 square cm Formula used: Area of semicircle = (πr²)/2 Perimeter of semicircle = (πr) + 2r Calculation: Area of semi-circle = 77 square cm ∴ 77 = (πr²)/2 ⇒ r = 7 cm Now, Perimeter of semi-circle = (πr) + 2r = (π × 7) + 2 × 7 = 36 cm ∴ The perimeter of semi-circle is 36 cm

If the area of semi-circle is 77 square cm then find the perimeter of semicircle?1. 36 cm2. 35 cm3. 32 cm4. 30 cm

Answer» Correct Answer - Option 1 : 36 cm

Given:

Area of semi-circle is 77 square cm

Formula used:

Area of semicircle = (πr²)/2

Perimeter of semicircle = (πr) + 2r

Calculation:

Area of semi-circle = 77 square cm

∴ 77 = (πr²)/2

⇒ r = 7 cm

Now, Perimeter of semi-circle = (πr) + 2r = (π × 7) + 2 × 7 = 36 cm

∴ The perimeter of semi-circle is 36 cm

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If the area of semi-circle is 77 square cm then find the perimeter of semicircle?1. 36 cm2. 35 cm3. 32 cm4. 30 cm

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