Question

3. For each of the following numbers, find the smallest whole number by which it should be multiplied so as
to get a perfect square number. Also find the square root of the square number so obtained.
(i) 1620
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Answer 1

Answer:

Prime factorisation of 1620 =  2 x 2 x 3 x 3 x 3 x 3 x 5.

1620 * 5 = 8100

square root of 8100 = 90

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