Question

The circuifference of a circular garden is 138.16 feet. What is the radius of the garden? Use 3.14 for it and do not round your

Answer 1

The circumference of a circle is given as:

`C=\pi D`

where D is the diameter. Plugging the value given and solving for D we have:

`\begin{gathered} 138.16=(3.14)D \\ D=(138.16)/(3.14) \\ D=44 \end{gathered}`

Now, the radius is twice the diameter, that means that:

`r=(D)/(2)=(44)/(2)=22`

Therefore the radius is 22 ft.