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  1. One of the four angles of a rhombus is 90 degrees. If each side of the rhombus is 20 cm, what will be the length of the longer diagonal?

    2. A.
    20 √2 cm
    B.
    25 √2 cm
    C.
    25 √2 cm
    D.
    30 √2 cm

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    Answer : Option A

    Explanation :

    A rhombus with one of its angle 90 degrees is a square. So, both the diagonals are of equal length.

    Now, Diagonal of a square= √2 × side

    Given Side = 20 cm

    So, Diagonal = 20 √2 cm

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