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25 March, 20:19

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. 25 March, 22:17
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    41 units

    Step-by-step explanation:

    Pythagorean's theorem,

    Hypotenuse² = base² + adjacent²

    Diagonal² = length² + width²

    = 40² + 9²

    = 1600 + 81 = 1681

    Diagonal = √1681 = 41 units
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