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Area and volume SAT question

Math · Geometry and Trigonometry · Easy · Answer it here, explanation included.

What is the area, in square centimeters, of a rectangle with a length of centimeters and a width of centimeters?

ExplanationShow

Choice D is correct. The area , in square centimeters, of a rectangle can be found using the formula , where  is the length, in centimeters, of the rectangle and is its width, in centimeters. It's given that the rectangle has a length of centimeters and a width of centimeters. Substituting for and for in the formula yields , or . Therefore, the area, in square centimeters, of this rectangle is .

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

Choice B is incorrect. This is the perimeter, in centimeters, not the area, in square centimeters, of the rectangle.

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

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