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15 March, 18:03

Find the diagonal of a square whose sides are 5cm long

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  1. 15 March, 18:12
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    5√2 cm or 7.1 cm

    Step-by-step explanation:

    We can use Pythagoras' Theorem:

    The square on the diagonal is equal to the sum of the squares of the other two sides.

    d² = 5² + 5²

    d² = 25 + 25

    d² = 50

    d = √50

    d = √ (25*2)

    d = 5√2

    d≈ 7.1 cm
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