The booklet All About Lawns published by Ortho Books gives the following instructions for measuring the area of an irregularly shaped region. (See figure in the next column.)

Irregular Shapes (within 5% accuracy) Measure a long (L) axis of the area. Every 10 feet along the length line, measure the width at right angles to the length line.

Total widths and multiply by 10.

A = (40' + 60' + 32') × 10 

A = 132' × 10' 

A = 1320 square feet

How does this method relate to the discussion in this section?

Transcribed Image Text:

Area = (A₁A₂ + B₁B₂ + C₁C₂ etc.) × 10