Question

perimeter of a circle is 154m.
find area​

Answer 1

Step-by-step explanation:

$2\pi \: r = 154m \\ 2 \times \frac{22}{7} \times r = 154m \\ r = \frac{154m \times 7}{2 \times 22} \\ r = \frac{49}{2} = 27.5m \\ \\ now \: \: area = \pi \: {r}^{2} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{22}{7} \times 27.5 \times 27.5 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2376.78 \: {m}^{2}$