The length of a rectangle is twice its width. Find the area of a rectangle if its width is 12 cm less than its length.

The area of a rectangle is found by multiplying its length by its width. Let’s take the width of the rectangle as x, then its length is x + 12. We also know that the length of the rectangle is twice its width, so the length is 2 * x. Let’s compose a system of equations:
2 * x = x + 12;
2 * x – x = 12;
x = 12 (cm).
The width of the rectangle is 12 cm, then its length is 12 + 12 = 24 cm.Let’s find the area:
12 * 24 = 288 (cm2).
Answer: The area of a rectangle is 288 square centimeters (cm2).