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25 August, 11:02

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

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  1. 25 August, 11:29
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    I would recommend using:

    a2 + b2 = c2

    a and b are the legs, and c is the hypotenuse (or diagonal)

    9•9

    40•40

    81+1600=c2

    1681=c2

    c=41

    So the diagonal is 41units
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