Question

Find the area of the circle if its circumfence is 88 cm.

Answer 1

Circumference = 88 cm
$$\begin{gathered} \Rightarrow 2\mathrm{\pi }r=88 \\ \Rightarrow r=\frac{88\times 7}{2\times 22}=14\mathrm{cm} \end{gathered}$$
$$\begin{gathered} \mathrm{Area}\mathrm{of}\mathrm{the}\mathrm{circle}=\mathrm{\pi }{r}^2=\frac{22}{7}\times {\left(14\right)}^2 \\ =616{\mathrm{cm}}^2 \end{gathered}$$