SOLUTION: Fig 1 shows a cone-shaped paper cup with water (its radius is 5 cm).However, the paper cup got a hole at its bottom, and after a period of time, the water inside reduced as in fig

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Question 935787: Fig 1 shows a cone-shaped paper cup with water (its radius is 5 cm).However, the paper cup got a hole at its bottom, and after a period of time, the water inside reduced as in fig 2 (its radius is 3 cm).Find the ratio of the volumes of leakage and the remaining water.
This was the question, there are two figures in the question.
Please help me as I have an examination after 2 days and I am working very hard to get good marks.

Answer by josgarithmetic(39630)   (Show Source): You can put this solution on YOUR website!
Formula for volume of a cone: , h for height, r for radius.

Your example does not give any value for height, so keeping as just h for the entire conical cup.

Original volume filled,




After leakage, volume filled,
empty depth x;



Volume that leaked,


The ratio answer is the expression:

You can try to simplify this if you want.

common factor pi in numerator and denominator.

and then (3/3) factor to continue,




is NOT used as exponent; the rendering just makes it appear that way. is only used as a factor.

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