Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
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ok Thank you for your help ! It was great !
You're right! I'd forgotten that one. Ok. You have them all.
But for the semi-cylinder, you didn't count the rectangle ????
OK. Then I will assume that the original Russian also meant plane ie. flat surface.
Yes, I copied the question word for word
And the word used is definitely 'plane'?
Well, it's originaly a russian book, but it's in english. (If I understood correctly your question?)
I'm still not sure. What language was the question written in?
ok, so i've got half a cylinder. which is composed of two half a circle and one rectangle.
I've just edited my post by adding two links.
Well yes that's it. If we decompose it, we get 3 surfaces.
I'm not sure what the question means exactly. What did you get for the others?
Give examples of geometric solids bounded by one, two ,three , four planes (or parts of planes)