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Which statement correctly describes an area model?

Answer and explanation

Correct answer: An area model uses multiplication of length and breadth.

The correct answer is A. An area model represents a multiplication by dividing a rectangle or square into smaller regions. The area of each region is found by multiplying its length by its breadth, and the total area is obtained by adding the regions. For example, a rectangle with sides \(x+2\) and \(x+3\) gives regions \(x^2\), \(3x\), \(2x\), and \(6\); their sum represents the product. Option B is wrong because division is not the defining operation of an area model. Option C is wrong because plus and minus signs determine whether regions are added or subtracted, especially in identities involving \(x-2\). Option D is wrong because the model keeps and combines all relevant terms. Memory cue: split the sides, multiply each pair of side parts, then add signed regions.

Related tags

Area ModelMultiplicationVisual AlgebraVisual Models Of IdentitiesExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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