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6-65.

Find the missing side lengths of each rectangle, (a) and (c) or square (b) and (d).

  1. width

    length

    interior

    To find the area of a rectangle, multiply the length
    by the width.

    Solve for .

  1. width

    interior

    length

    Recall the properties of a square. All the side lengths must be equal.

    Since one side is already given, you can conclude that the other side is also cm.

  1. width

    length


     interior

     

    See the help for part (a).

    cm

  1. interior

    length

    width

    See the help for part (b).