Question

LOGICName:Mandy made a circular flower garden with adiameter of 7 feet. She wants to put a fence Iaround the outside of the garden. About howmuch fence does Mandy need to buy? (Use 3.14for д.)

Answer 1

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

`\begin{gathered} 2*\pi* r \\ \text{where } \\ \pi\text{ = 3.14} \\ r\text{ = radius = }\frac{diameter\text{ }}{2}=(7)/(2)=3.5ft \end{gathered}`

She will then need to put a fence with the following perimeter

`2\text{ x 3.14 x 3.5 =21.98ft}`

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.