Khan/khan-exercises — Issue #12834: Solid geometry - clarity of question
Author: KhanBugz
Created: 2012-02-01 21:45:17+00:00
State: open
Labels: ie8, ie9, win7, wrong-or-unclear

pls clarify if surface area of open or closed cylinder is wanted.

also, indicate that there is no need to multiply by pi value.

[solid_geometry.html?seed=58&problem=cylinder-T](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solid_geometry.html?seed=58&problem=cylinder-T&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/solid_geometry.html?seed=58&problem=cylinder-T&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2272%20pi%5C%22%22%2C528%5D%2C%5B%22hint-activity%22%2C%220%22%2C16%5D%2C%5B%22hint-activity%22%2C%220%22%2C17%5D%2C%5B%22hint-activity%22%2C%220%22%2C17%5D%2C%5B%22hint-activity%22%2C%220%22%2C18%5D%2C%5B%22hint-activity%22%2C%220%22%2C19%5D%5D)

["72 pi"]

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