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Find the Square of the Following Number by Visual Method: 99 - Mathematics

Find the square of the following number by visual method: 

99 

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Solution

 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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APPEARS IN

RD Sharma Class 8 Maths
Chapter 3 Squares and Square Roots
Exercise 3.3 | Q 7.5 | Page 32
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