Question

A circular garden has a diameter of 28 feet. The garden is to be covered with peat moss. If each bag of peat moss covers 160 feet square, how many bags of peat moss will be needed?

Answer 1

15.39 bags or 16 bags

Explanation:

To get the area of a circular garden, you use the following formula:

area = pi * r^2

Plug in r = 28 feet:

area = pi * 28^2

area = about 2463 square feet

Each bag covers 160 sq ft, so divide:

2463 sq ft / 160 sq ft per bag

= 15.39 bags

But you can't have a partial bag, so round up to:

16 bags