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12 January, 15:15

When the lengths of the sides of a square are increased by 5 cm, the area is increased by 85 square cm. What was the size of the original square?

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  1. 12 January, 15:41
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    First we will find the square root of the square with the added sides to find the side + 5.

    √85 = 9.219

    ∴ Original side = 9.219 - 5 = 4.219 cm
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