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8 October, 10:53

A square has an area of 81 inches. if the side lengths of the square are each mutlipied by 2, find the area of the new square

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  1. 8 October, 13:54
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    The area of the new square=324 in²

    Step-by-step explanation:

    The area of a square can be expressed as;

    A=L*L

    where;

    A=area of the square

    And since the sides of a square are equal, they can be expressed as;

    L=length of one side

    L=length of the other side

    In our case;

    L=unknown

    A=81 in²

    replacing;

    81=L²

    √L²=√81

    L=9

    Multiply side length by 2

    9*2=18 inches

    The new area can be expressed as;

    A=18²=324 in²

    The area of the new square=324 in²
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