Question

find the perimeter of circle whose area is 154cmsquare​

Answer 1

Hey buddy...... here's your answer

$area \: of \: circle = 154cm {}^{2}$

$\pi \: r {}^{2} = 154cm {}^{2}$

$\frac{22}{7} \times r { }^{2} = 154cm {}^{2}$

$r {}^{2} = 154 \times { \frac{7}{22}}$

$r = \sqrt{49}$

$r = 7cm$

Perimeter=2πr

=2×(22/7)×7

=44cm

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