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6 September, 07:07

A rectangle has a width of 9 units and a length of 40 units. what is the length of a diagonal?

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  1. 6 September, 08:19
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    Imagine a right triangle with legs legnth 9 and 40, and hyptonuse is the diagonal legnth c

    a^2+b^2=c^2

    9^2+40^2=c^2

    81+1600=c^2

    1681=c^2

    sqrt both sides

    41=c

    the legnth of the diagonal is 41 units
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