Khan/khan-exercises — Issue #9681: Angle bisector theorem - Rounding Error
Author: KhanBugz
Created: 2011-12-28 06:41:37+00:00
State: open
Labels: lion, safari, wrong-or-unclear

Reporter: jrball@mit.edu

The problem statement requests that the answer be rounded to one decimal place. The solution gives the unsimplified form of the solution as (4.6*4.3)/9.2. This exactly evaluates to 2.15. According to conventional rounding this should round up to 2.2, but the solution is given as 2.1.

[angle_bisector_theorem.html?seed=68&problem=BD](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/angle_bisector_theorem.html?seed=68&problem=BD&debug)

[Answer timeline](http://sandcastle.khanacademy.org/media/castles/Khan:master/exercises/angle_bisector_theorem.html?seed=68&problem=BD&debug&activity=%5B%5B%22incorrect-activity%22%2C%22%5C%222.2%5C%22%22%2C53%5D%2C%5B%22hint-activity%22%2C%220%22%2C142%5D%2C%5B%22hint-activity%22%2C%220%22%2C145%5D%2C%5B%22hint-activity%22%2C%220%22%2C146%5D%2C%5B%22hint-activity%22%2C%220%22%2C147%5D%2C%5B%22hint-activity%22%2C%220%22%2C152%5D%2C%5B%22hint-activity%22%2C%220%22%2C152%5D%5D)

["2.2"]

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