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In a square of side x + 7, the small corner square is 7². What is its area?

Answer and explanation

Correct answer: 49

The correct answer is C. The corner shape is a square whose side length is 7. The area of any square is side × side, so its area is 7 × 7 = 7² = 49 square units. The full square has side x + 7, but that does not change the area of this particular small corner square. Option A gives only the side length, not the area. Option B doubles the side and has no area meaning here. Option D incorrectly combines the variable x with 49; the corner square has side 7 alone. In an area model, each part must be calculated from its own two dimensions. Memory cue: the small constant square contributes the constant term 7² = 49.

Related tags

Square AreaConstant TermVisual Area ModelAlgebraic IdentitiesVisual Models Of IdentitiesExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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