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Math Help - formula for the liquid volume inside a bottle at any given time

  1. #1
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    formula for the liquid volume inside a bottle at any given time

    Question :
    What is the formula for working out the volume inside a bottle ( eg a 750 ml bottle ), and converting that into mils (millilitres), bearing in mind the different dimensions bottles can have and varying volumes or capacity. What I want to measure is the liquid inside the bottle therefore a 750 ml bottle for example would have 750 mls of liquid inside the bottle but the overall volume of the bottle would need to be greater than 750 ml eg a bottle of wine……therefore how can I meaure the amount of liquid inside the bottle at any one time without having to pour the liquid out into a measuring container.

    Question :
    What is the formula for working out the volume inside a bottle ( eg a 750 ml bottle ), and converting that into mils (millilitres), bearing in mind the different dimensions bottles can have and varying volumes or capacity. What I want to measure is the liquid inside the bottle therefore a 750 ml bottle for example would have 750 mls of liquid inside the bottle but the overall volume of the bottle would need to be greater than 750 ml eg a bottle of wine……therefore how can I meaure the amount of liquid inside the bottle at any one time without having to pour the liquid out into a measuring container.



    ps i couldn't paste my diagram



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  2. #2
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    Quote Originally Posted by freestyle View Post
    Question :
    What is the formula for working out the volume inside a bottle ( eg a 750 ml bottle ), and converting that into mils (millilitres), bearing in mind the different dimensions bottles can have and varying volumes or capacity. What I want to measure is the liquid inside the bottle therefore a 750 ml bottle for example would have 750 mls of liquid inside the bottle but the overall volume of the bottle would need to be greater than 750 ml eg a bottle of wine……therefore how can I meaure the amount of liquid inside the bottle at any one time without having to pour the liquid out into a measuring container.
    If you know the density of the liquid and if you know the weight of the empty bottle you can use a balance.

    If you know the shape of the bottle (cylindre, sphere, etc) you can use a dipstick (is this the right expression? You measure the amount of motor oil by a dipstick, right?)
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