Khan/khan-exercises — Issue #9749: Solid geometry - Wrong answer
Author: KhanBugz
Created: 2011-12-29 02:03:18+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

Reporter: Oscarte95@hotmail.com

Shouldn't the "Total surface area" be 6 pi + 9 pi + 42 pi", instead of 9+9, as the circumference is 6 pi.

Thanks in advance.

[solid_geometry.html?seed=120&problem=cylinder-T](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solid_geometry.html?seed=120&problem=cylinder-T&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solid_geometry.html?seed=120&problem=cylinder-T&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2257%20pi%5C%22%22%2C34%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%2C%5B%22hint-activity%22%2C%220%22%2C2%5D%5D)

["57 pi"]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:8.0) Gecko/20100101 Firefox/8.0

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