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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

12

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B

6

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C

16

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D

18

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Solution

## The correct option is B 6 We can observe, we have 4 rows and 9 columns in the given rectangle. Total number of dots in given figure =4×9=36 Let 'a' be the sides of the square which we get after rearranging the dots of the rectangle. Total number of dots in that square =a2 Since total number of dots is 36 a2=36 a=√36 a=√22×32 a=2×3 a=6 So, the side of the square will be equal to 6.

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