Math, asked by adelak542, 11 months ago

If the area of a semi-circular field is 15400 sq m, then perimeter of the field is:

Answers

Answered by Anonymous
7

Step-by-step explanation:

Hope it helps uuh....!!

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Answered by RvChaudharY50
117

Given :----

  • Area of semi-circle = 15400m² .

To Find :---

  • Perimeter of Semi-circle ..

Formula used :-----

  • Area of semi-circle = πr²/2
  • Perimeter of semi-circle = πr + 2r ( Diameter length will also add in perimeter remember this) .

Calculation :------

→ πr²/2 = 15400

→ πr² = 15400×2

→ r² = 15400×2 × 7/22

→ r² = 7×7×100×2

→ r = 7×10×√2 = 70√2 m .

_______________________

Now, perimeter = πr + 2r ,

putting values we get,

→ perimeter = 22/7 × 70√2 + 2(70√2)

→ perimeter = 22×10√2 + 140√2

→ perimeter = 220√2 + 140√2

→ perimeter = 360√2 m .

Hence , perimeter of semi-circle will be 360√2m .

(Hope it helps you) ..

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