The length of the rectangle was increased by 0.2 of its length, and the width was decreased by 0.2 of its width

The length of the rectangle was increased by 0.2 of its length, and the width was decreased by 0.2 of its width. The area of the rectangle has increased or decreased

The area of a rectangle S is determined by the product of its width and its length. Let’s say that A is the length of the rectangle and B is its width. So its area is S = A * B. Now let’s find the area by increasing the length and decreasing the width. Since the length has increased by 0.2 length, now its length will be (A + 0.2A) = 1.2 * A. The width has decreased by 0.2 of the width, now the width will be 0.8 * V. Find S = 1.2 * A * 0.8 * B = 0.96 * A * B. There was an area S = A * B, and now S = 0.96 * A * B. Since 0.96 is less than 1, the area has decreased.
Answer: the area has decreased