Question

the perimeter of a semi circle is 28.8cm then its area is

Answer 1

Heya ! Here is u r Ans ✌✌
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The Perimeter of semi circle = 2πr

Perimeter ➡ 28.8

$substitute \: \: r = \frac{perimeter}{\pi + 2}$

$= \frac{28.8}{3.14 + 2}$

$=5 .6cm$

$therefore. \\ area = \frac{\pi {}^{2} }{2}$

$= 3.14 \times \frac{(5.6) {}^{2} }{2}$

$= 49.2352 \: sq \: m$
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