The measurement of the side of a square floor tile is 14 inches, with a possible error of 
inch. Use differentials to approximate the possible propagated error in computing the area of the square.
Definitions:
Heuristic
A problem-solving strategy using practical methods or strategies for finding acceptable solutions, even if they're not perfect.
Multiple-Choice Exam
A form of assessment where individuals select the correct answer(s) from several choices provided for each question, used to evaluate knowledge on a topic.
Rule
A prescribed guide for conduct or action, which can be established by an authority or developed within a particular system or community.
Functional Fixedness
A cognitive bias limiting a person's ability to use an object only in the way it is traditionally used, hindering creativity and problem-solving.
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