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In a square of side (a+b+c), what will be the areas of the small squares?

Answer and explanation

Correct answer: a², b², c²

The correct answer is A: the areas are a², b², and c². In a visual model, the side of the large square is divided into three lengths, a, b, and c. The small square belonging to length a has both its sides equal to a, so its area is a×a=a². Similarly, the other two small squares have areas b×b=b² and c×c=c². The products ab, bc, and ca describe rectangular pieces because their side lengths are different. The expressions 2ab, 2bc, and 2ca represent the combined areas of pairs of equal rectangles in the expansion of (a+b+c)², not the individual small squares. Option D mixes unrelated quantities and does not describe the three square regions. Memory cue: equal side × equal side gives a square term; two different side lengths give a rectangle term.

Related tags

Three-Term-SquareVisual-AreaAlgebraic-IdentitiesVisual Models Of IdentitiesExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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