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प्रश्न
Find the square of the following number by visual method:
99
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उत्तर
We have:
99 = 90 + 9
Let us draw a square having side 99 units. Let us split it into 90 units and 9 units.
The sum of the areas of these four parts is the square of 99. Thus, the square of 99 is 9801.
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