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?
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
So, the side of the square will be equal to 6.