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28 May, 20:34

How much air is needed to fill a ball with a diameter of 7 centimeters

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  1. 28 May, 21:15
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    you need the volume, and the baloon is a sfere

    you have the diameter that is 2 * r

    7 : 2 = 3.5 cm (r)

    V = 4/3πr³

    V = 4/3 * 3.14 * 3.5³

    V = 179,59 cm³ (you can round to 179.6)
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