Answer:
7.2 ft
Explanation:
Here we're told that the circumference of the garden is 45 ft.
We want to determine the radius of the garden.
The formula for circumference is C = 2πr, and this C = 45 ft:
45 ft = 2πr. Solving for r: r = (45 ft) / (2π) = approx. 7.2 ft