Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20130410 23:30:32
radius 3 mysteryHi #2 20130411 01:02:31
Re: radius 3 mysteryIt only happens when r = 3. This is because so . Hence the surface area and the volume of a sphere are numerically equal if and only if its radius is 3. PS: It has nothing to do with the value of pi. Last edited by Nehushtan (20130411 01:10:38) 134 books currently added on Goodreads #3 20130411 03:56:14
Re: radius 3 mysteryhi harmonique You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei #4 20130411 09:02:41
Re: radius 3 mysteryHi guys, #5 20130411 12:20:43
Re: radius 3 mysteryThere is nothing mystery though. Here is why: Rearranging the equation above yields, So, r=0 or 3 