Final answer:
The formula for the area A of a rectangle with width twice its length is A = 2x^2.
Step-by-step explanation:
To find the formula for the area A of a rectangle, we can use the given information that the width is twice the length. Let's say the length is x, then the width would be 2x. The formula for the area of a rectangle is length times width, so A = x * 2x = 2x^2.
Learn more about formula for area of a rectangle