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 The Peculiar Pillar (Posted on 2003-04-15)
A pillar 2m tall stands on a square base, 20cm on a side. The peculiar thing about this pillar is that its top, which is parallel to the base, is an equilateral triangle 16cm on a side.

The four edges running the length of the pillar are linear. Two of these edges meet at one corner of the triangle, and the edge of the triangle opposite this vertex is parallel to two edges of the square. All horizontal cross sections have straight edges.

If the pillar is made of basalt (density = 2.8 g/cm^3), what is its total mass?

 See The Solution Submitted by Bryan Rating: 4.0000 (6 votes)

 Subject Author Date Another Solution P C 2004-02-04 20:36:39 Hmmm... Silly Jilly 2003-05-12 02:25:30 I do not recall... Tim Axoy 2003-05-11 13:15:21 I do not recall... Tim Axoy 2003-05-11 13:14:24 Oh My God !!!! Ravi Raja 2003-04-19 07:56:01 solution Tim Axoy 2003-04-18 12:54:46 A Twist Charlie 2003-04-15 05:02:49 No Subject Charlie 2003-04-15 05:02:05 a solution Hank 2003-04-15 04:22:19 re: solution Robin Gatter 2003-04-15 04:01:05 My solution Robin Gatter 2003-04-15 03:52:34 solution Charlie 2003-04-15 03:44:41

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