220282101435071316913131
2028=2×2×3×13×13
[2 mark]
Here, prime factor 3 has no pair.
Therefore, 2028 must be multiplied by 3 to make it a perfect square.
[1 mark]
∴2028×3=6084
And √6084=2×3×13=78
Thus, 78 is the square root of the square number so obtained.
[1 mark]