Solution: The original side length of the square is $ \frac{40}{4} = 10 \, \text{cm} $. The original area is $ 10^2 = 100 \, \text{cm}^2 $. After increasing each side by $ 2 \, \text{cm} $, the new side length is $ 12 \, \text{cm} $, and the new area is $ 12^2 = 144 \, \text{cm}^2 $. The increase in area is $ 144 - 100 = 44 \, \text{cm}^2 $.

Tue, 05 May 2026 01:08:04 +0000

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