Khan/khan-exercises — Issue #15799: Geometry 1 - Pi (3.14)
Author: KhanBugz
Created: 2012-03-09 04:51:45+00:00
State: open
Labels: lion, other, safari

I was doing "Geometry 1" as a refresher course. Eventually I got to a problem asking for the area of a circle that has a radius of 2, so I put 12.56 as the answer (3.14 x 2 x 2). After checking all of the steps (making sure i had done everything in the proper order/right way) I was very curious as to what was going on so i pressed the solution button until it can up with the answer 4π.
Instead of the answer box allowing the use of Pi (3.14) it wanted Pi (π) which i had to copy and paste into the answer box so it would take my answer. So I guess my problem is: allow the use of 3.14 as well.

[geometry_1.html?seed=190&problem=circle-c-to-K (circles_1)](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/geometry_1.html?seed=190&problem=circle-c-to-K&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/geometry_1.html?seed=190&problem=circle-c-to-K&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%2218.84%5C%22%22%2C50%5D%2C%5B%22incorrect-activity%22%2C%22%5C%2218.84%20Pi%5C%22%22%2C13%5D%2C%5B%22incorrect-activity%22%2C%22%5C%2218.84%20pi%5C%22%22%2C3%5D%2C%5B%22incorrect-activity%22%2C%22%5C%2218.84pi%5C%22%22%2C3%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226pi%5C%22%22%2C8%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226%20pi%5C%22%22%2C3%5D%2C%5B%22incorrect-activity%22%2C%22%5C%226%20Pi%5C%22%22%2C3%5D%5D)

["18.84","18.84 Pi","18.84 pi","18.84pi","6pi","6 pi","6 Pi"]

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