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别论坛拿过来的
这是新加坡理工学院高级数学(Higher Maths)问题
A hollow hemispherical bowl of radius 4 cm has a smaller solid spherical marble of radius 1 cm at the bottom. If the bowl is filled with water to a depth of 1.5 cm, find the volume of water in the bowl. |
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发表于 18-7-2006 04:27 PM
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当水位是 t cm 高时,hemisphere 里的水的体积是 1/3 * pi * (12-t) * t^2 .为什么?想想积分力求体积的方法吧。
然后就不难了。 |
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