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  1. The perimeter of a square is equal to the perimeter of a rectangle of length 30 cms. The area of the rectangle is 360 sq. dms. What is the side of the square ?
    2. A.

    24 cms
    B.

    21 cms
    C.

    42 cms
    D.

    18 cms
    E.

    None of these

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    Workspace

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    Answer : Option B

    Explanation :

    Breadth of rectangle

    = 360/30 = 12 cm

    Perimeter of rectangle = 2(length + breadth)

    = 2(30+12) = 84 cm

    Perimeter of a square = 84 cm

    Side of the square = 84/4 = 21 cm

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