# Truncated cone

Calculate the height of the rotating truncated cone with volume V = 1115 cm

^{3}and a base radii r_{1}= 7.9 cm and r_{2}= 9.7 cm.**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

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**Dr Math**

it's formula; can be proved....https://math.stackexchange.com/questions/1626218/calculation-of-rise-in-height-of-water-in-a-frustum-of-right-circular-cone

**Kukoslav**

need to solve a cubic equation, as obtained above, to find rises in heights... integral

#### To solve this example are needed these knowledge from mathematics:

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