Question

Find the circumference of this circle.Use 3.14 to approximate .C = 2120 ftC = [?] ft

Answer 1

The diameter of the circle is 20ft.

So, its radius is

`\begin{gathered} r=(20)/(2) \\ =10\text{ ft} \end{gathered}`

The circumference of the circle is

`\begin{gathered} C=2\pi r \\ =2*3.14*10 \\ =62.8\text{ ft} \end{gathered}`

Hence, the circumference of the circle is C=62.8 ft