Q.4 Find the square roots of the following numbers by the Prime Factorisation Method.

(i) 729

 

Answers (1)

By prime factorisation, we know that 

                729 = 3\times3\times3\times3\times3\times3

or             729 = (3\times3\times3)^{2} = 27^{2}

Thus the square root of 729 is 27. 

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