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30 November, 17:21

The area of a square is 81m square. what is the perimeter of the square? how do you know

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  1. 30 November, 20:13
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    36m

    Step-by-step explanation:

    If the area of a square is 81 m

    A=81m

    but we know that A=l² so l=radA

    l=9m

    p=4l

    finally p=4•9=36m
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