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Geometry and Trigonometry / Area and volume Difficulty: Easy

The width of a rectangle is $7$ centimeters. The length of the rectangle is $40$ centimeters longer than the width. What is the area, in square centimeters, of this rectangle?

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Explanation

Choice D is correct. It’s given that the width of this rectangle is $7$ centimeters and that the length of this rectangle is $40$ centimeters longer than the width. Therefore, the length of this rectangle is $7 plus 40$ , or $47$ , centimeters. The area of a rectangle can be found by multiplying its length and its width. Therefore the area, in square centimeters, of this rectangle is $left parenthesis 7 right parenthesis left parenthesis 47 right parenthesis$ , or $329$ .

Choice A is incorrect. This is the width, in centimeters, not the area, in square centimeters, of this rectangle.

Choice B is incorrect and may result from conceptual or calculation errors.

Choice C is incorrect and may result from conceptual or calculation errors.