Area of a rectangle is given by which formula?

• A. A=lw
• B. A=s^2
• C. A=bh
• D. A=lw^2

Answer: (A)

Area measures how much space fits inside a shape, and for a rectangle that comes from the two side lengths. Multiply the length by the width to count how many unit squares fit across both dimensions, giving the area in square units. That’s written as length × width, commonly shown as lw. The square formula s^2 applies only when all sides are the same, so it isn’t appropriate for a rectangle with distinct length and width. A formula like width squared would misrepresent the relationship between the two dimensions, and base × height is a general form used for many shapes, but the standard labeling for a rectangle’s sides is length and width, so lw is the conventional choice.