A decimal number is multiplied by itself. If the product is 51.84, then the number is
Let the number be x.
Then, product =x×x=x2
But product = 51.84 [given]
We use long division method to find the square root of 51.84. For that, we will group 2 numbers from right to left and then proceed with the division.
Hence, the required number is 7.2