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24 April, 00:22

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

31 units

39 units

41 units

49 units

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  1. 24 April, 00:43
    0
    41 units

    Step-by-step explanation:

    Rectangles have right angles, so we can use Pythagorean theorem to find the diagonal.

    c² = a² + b²

    c² = 9² + 40²

    c² = 81 + 1600

    c² = 1681

    c = 41
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