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प्रश्न
The side of a square field is 16 m. What will be increase in its area, if each of its sides is increased by 4 m?
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उत्तर
Side of a square field (a) = 16 m
∴ Area of a square field = (a)2
= 16 × 16 m2 = 256 m2
Each of its sides is increased by 4 m
∴ New side = (16 + 4)m = 20 m
∴ New area of the square feild = (a)2
= 20 × 20 m2 = 400 m2
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