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Math, geometry

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The perimeter of a rectangular red sticker is 30 millimeters. The sticker is 4 millimeters tall. How wide is it?

  • Math, geometry -

    perimeter of a rectangle = 2width + 2length

    30= 2w+2(4)
    30= 2w+8
    22= 2w
    w= 11 millimeters

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