Question

The circumference of a circle


is 22 cm.find its
area​

Answer 1

Answer:

$c = 22cm \\ r = radius \: \\ \\ \\ \\ c = 2\pi \: r \\ 22 = 2\pi \: r \\ 22 = 2 \times \frac{22}{7} \times r \\ r = \frac{7}{2} cm \\ \\ \\ \\ area \: = \pi \: {r}^{2} \\ = \frac{22}{7} \times \frac{7}{2} \times \frac{7}{2 } \\ = 38.5cm {}^{2}$