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Question

Observe the rectangle given below

If we rearrange the dots and make this rectangle a square, then what will be the side of that square.


A

2

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B

4

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C

8

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D

16

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Solution

The correct option is B

4


We observe that we have 2 rows and 8 columns in the rectangle.

Total number of dots in given figure =2×8=16.

Let 'a' be the side of the square which we get after rearranging the dots of this rectangle.

Total number of dots in that square =a2

Since the total number of dots is 16

a2=16

a=16

a=24

a=22=4

So, the side of the square will be equal to 4.


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