Khan/khan-exercises — Issue #11301: Equation of an ellipse - The answer is 4 but it keeps saying it's wrong
Author: KhanBugz
Created: 2012-01-15 20:45:50+00:00
State: open
Labels: firefox, win7, wrong-or-unclear

The answer to the minor radius is 4 and it says for in the steps but it doesn't allow 4 as a correct answer

[equation_of_an_ellipse.html?seed=146&problem=0](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_an_ellipse.html?seed=146&problem=0&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/equation_of_an_ellipse.html?seed=146&problem=0&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5B%5C%22-5%5C%22%2C%5C%228%5C%22%2C%5C%228%5C%22%2C%5C%224%5C%22%5D%22%2C16%5D%2C%5B%22hint-activity%22%2C%220%22%2C18%5D%2C%5B%22hint-activity%22%2C%220%22%2C38%5D%2C%5B%22hint-activity%22%2C%220%22%2C40%5D%2C%5B%22hint-activity%22%2C%220%22%2C41%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-5%5C%22%2C%5C%228%5C%22%2C%5C%228%5C%22%2C%5C%224%5C%22%5D%22%2C48%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-5%5C%22%2C%5C%228%5C%22%2C%5C%228%5C%22%2C%5C%224%5C%22%5D%22%2C9%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-5%5C%22%2C%5C%228%5C%22%2C%5C%228%5C%22%2C%5C%224%5C%22%5D%22%2C2%5D%2C%5B%22incorrect-activity%22%2C%22%5B%5C%22-5%5C%22%2C%5C%228%5C%22%2C%5C%228%5C%22%2C%5C%22%204%5C%22%5D%22%2C10%5D%5D)

[["-5","8","8","4"],["-5","8","8","4"],["-5","8","8","4"],["-5","8","8","4"],["-5","8","8"," 4"]]

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:9.0.1) Gecko/20100101 Firefox/9.0.1

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