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how do you calculate the square of 1521

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how do you calculate the square of 1521

Feb 9th, 2015

We know that the square of 40 is 1600, so the number with the square of 1521 must be smaller but close to 40.

So try 39 first. And you will find that 39*39=1521.

Feb 9th, 2015

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Feb 9th, 2015
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Feb 9th, 2015
Jun 24th, 2017
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