Answer :
The square root of the number 100 will be 10 so option A is correct.
What is a perfect square?
A perfect square is a number system that can be expressed as the
square of a given number from the same system.
We have been given a number 100.
In order to find the square root of the number;
[tex]\sqrt{100} \\\\\sqrt{10 \times 10} \\\\10[/tex]
Thus, the square root of the number 100 will be 10 so option A is correct.
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