Question

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⏺If the area of circle is 154cm²,Find its perimeter. ⏺

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

we know that
Area of circle
$2\pi \: r = 154 \\ 2 \times \frac{22}{7} \times r = 154 \\ r = 154 \times \frac{7}{44} \\ r = 7 \times \frac{7}{2} \\ r = \frac{49}{2}$
Area of circle
$\pi \: {r}^{2} = \frac{22}{7} \times { \frac{49}{2} }^{2} \\ \frac{22}{7} \times \frac{2401}{4} \\ 11 \times \frac{343}{2} \\ \frac{3773}{2} \: or \: 1886.5$