Question

How many flowers, spaced every 6 inches, are needed to surround a circular garden with a 10 foot radius?

Answer 1

To solve this problem you must apply the proccedure shown below:

1. You must calculate the perimeter of the circle:

The radius of the circle in inches is:

$radius=\frac{(10ft)(12in)}{1ft}=120in$

$P=2\pi(radius)\\ P=2\pi(120in)\\ P=753.98in$

2. Now, you must divide the perimeter by the space between each flower to find the number of flowers needed, which you can call $x$:

$x=\frac{753.98in}{6in}=125.6=126$

The answer is: 126 flowers.