Question

The Jones family want to enclose the garden with a fence. To the nearest foot (round to the nearest whole number), how much fencing will they need to buy?Garden: circle of radius 62.5 ft

Answer 1

The fencing that is needed is equal to the perimeter of the garden.

If we had a rectangular garden of 10 ft by 20 ft, we will need:

$P=2(10+20)=2\cdot30=60\text{ ft}$

In this case, the garden is a circle of 62.5 ft.

The perimeter is the circumference of the circle.

We can calculate the circumference as:

$C=2\pi\cdot r\approx2\cdot3.14\cdot62.5\approx392.7\approx393\text{ ft}$

Answer: they will need 393 ft of fencing.