## height of 2 L of water poured into upside-down cone

Geometric formulae, word problems, theorems and proofs, etc.

### height of 2 L of water poured into upside-down cone

A right circular, conical vessel of altitude 21 cm and base radius 11 cm is kept with its vertex downwards. If 2 litres of water is poured into it, how high above the vertex will the level of the water be?

I think I need to convert the 2 L to 2000 cc's, and use similar similar triangles to find the height of the water cone. Does that sound right? Thanks!

p.s. I'm supposed to use 22/7 for $\pi$, which makes the answer come out very "neat". If the answer is supposed to be 19 and 1/11 cm, then I've done it right.

little_dragon

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Joined: Mon Dec 08, 2008 5:18 pm