LWH 發問於 科學及數學數學 · 1 十年前

math(F.1 estimation)

Amy finds that 6 drops of water is leaking out of a dripping tap per min.She uses a cup of capacity 250mL to collect the water droplets. She finds that the cup is about 3/4 full after 32min. Estimate the volume of each water droplet.

ANS:1

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2 個解答

評分
  • 1 十年前
    最愛解答

    let the volume of each water droplet is x

    then since each min 6 drops

    32min=192 drops

    192x=3/4(250)

    192x=3/4(250)187.5

    x=0.9765625 ml

    x=0.9765625 cm^3

    2007-02-07 18:18:46 補充:

    1毫升=1立方厘米

    2007-02-07 18:19:19 補充:

    四捨五入後變成1 cm^3

    2007-02-07 18:19:38 補充:

    192x=3/4(250)=187.5

  • 1 十年前

    each water droplet =

    ((250 X 3/4) / 32) / 6

    =125 / 128

    = 1ml (or 0.97656 ml)

    rem.

    1. 250 X 3/4 is to find out the capacity of water droplets after 32 min.

    2. then each min. of total droplets is ans of 1. / 32

    3. So each droplet is ans 2. / 6

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