Calculate the Area of a Rectangular Field

A farmer has a rectangular field where the length is 3 times greater than the width. If the width of the field is represented by the variable $w$, what is the expression for the area of the field in square units?

The area $A$ of a rectangle can be calculated using the formula:

$$A = ext{length} imes ext{width}$$

Since the length is 3 times the width, the length can be represented as $3w$. Therefore, the area can be expressed in terms of $w$.