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Finding square roots


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Last updated 26 October 2012 15:30 by NZTecAdmin

Discuss how the reverse process might occur, that is if someone gives you the area of a square, is it possible to find the side length. Use several examples to illustrate that this can be found using the √ button on a calculator. 100 m2 ? For example: the side length of a square of area 100 m2 is 10m (√100 = 10).

Point out the process of squaring and finding the square root is not restricted to counting numbers. For example: 4.762 = 22.6576 gives the area of a square with sides of 4.76 and √22.6576 = 4.76 finds the side of a square with an area of 22.6576.

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