What geometric shape has an area calculated using the formula A = l × w?

The formula A = l × w is specifically used to calculate the area of a rectangle. In this formula, "l" represents the length and "w" represents the width of the rectangle. This means you are multiplying the two dimensions together to find the total area covered by the rectangle.

For example, if a rectangle has a length of 5 units and a width of 3 units, you would calculate the area as 5 × 3 = 15 square units. This relationship holds true for any rectangle, making the use of this formula a defining characteristic of rectangles.

In contrast, the other shapes have different formulas for calculating area. A square, while also having an area related to side lengths, uses a formula of A = s × s or A = s², where "s" is the length of one side. A triangle's area is calculated using the formula A = 1/2 × base × height. Lastly, the area of a circle is calculated using A = πr², where "r" is the radius. Thus, the rectangle, with its specific formula, clearly stands out as the correct answer.