Question

if the area of a circle is 49 Pi unit square then its perimeter is??​

Answer 1

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Answer 2

HEY MATE!!

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$\pi {r}^{2} = 49\pi$

cancelling π on both sides,

${r}^{2} = 49 \\ r = \sqrt{49 } \\ r = 7cm$

now,finding perimeter,

$2\pi \times r = 22 \div 7 \times 7 \div 2 \\ = 44cm$

Therefore the perimeter is

$\boxed{44cm}$

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