Why Know the Size of the Area to Be Treated?
To ensure accurate applications, you need to be able to calculate the size of the area to be treated. It is easier to
determine the size of a rectangular or circular area than it is to determine the size of an irregularly shaped site.
In the following examples, each calculation includes converting the square footage to acres by dividing by
43,560 sq. ft. per acre.
Rectangles and Squares
Calculate the area of a rectangle or square by multiplying the length (L) by the width (W).
You measure a rectangular field and find it to be 100 feet long and 800 feet wide. How many acres is it?
100 ft X 800 ft = 80,000 sq ft = 1.8 acres
43,560 sq ft per acre 43,560 sq ft per acre
Practice:
1. What is the area of a field in acres that is 1,000 ft. long and 305 ft. wide? 1 acre = 43,560 sq. ft.
2. What is the area of a field (in acres) that is 1,320 ft by 1,320 ft?
3. What is the area of a sports field that is 1,000 ft by 200 ft?
