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6 March, 03:50

An envelope is 3 inches wide, and it measures 7 inches along the diagonal. What is the envelope's length? If necessary, round to the nearest tenth.

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  1. 6 March, 04:19
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    The length of the envelope is 6.3 inches

    Step-by-step explanation:

    Width of the envelope = 3 inches

    Diagonal of the envelope = 7 inches

    To find:

    The length of the envelope.

    Let the length of the envelope be 'l'

    We can use pythogoras theorem to calculate the length.

    l = √ (49-9)

    l = √ (40)

    l = 6.3 inches

    The length of the envelope is 6.3 inches
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