Question

Find the area ofa cirde with a circumference of 50.24 units,

Answer 1

Step 1

Find radius r , from circumference

circumference = 50.24

`\begin{gathered} \text{Circumference = 2 }\pi\text{ r} \\ \pi\text{ = 3.142} \\ 50.24\text{ = 2 x 3.142r} \\ 50.24\text{ = 6.284r} \\ r\text{ = }(50.24)/(6.284) \\ r\text{ = 7.99} \end{gathered}`
`\begin{gathered} \text{Area = }\pi r^2 \\ =3.142\text{ x 7.99 x 7.99} \\ =\text{ 200.58} \end{gathered}`