Step 1
Draw the circular garden
Step 2
Write out the formula for the circumference of a circle and define the parameters
Circumference of a circle is given as
[tex]\begin{gathered} 2\times\pi\times r \\ \text{where } \\ \pi\text{ = 3.14} \\ r\text{ = radius = }\frac{diameter\text{ }}{2}=\frac{7}{2}=3.5ft \end{gathered}[/tex]She will then need to put a fence with the following perimeter
[tex]2\text{ x 3.14 x 3.5 =21.98ft}[/tex]So she will need a fence of a circumference of more than 21.98ft to fence the garden round.
From the options, the closest answer is 38ft, option C and 38 feet is more than 21.98ft. 22ft will mean the fence will be to close the garden with no room for movement etc. So logically, option C is the wisest cost-wise and for usage.
