The Case of the Decorated Envelope

Square Hippos
Topic: Coordinate Geometry
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Cory and his brother receive a geometry textbook from their grandmother. Before he sends her a thank you note, Cory figures out how many stickers he needs for the envelope. Cory and his brother each use their own method to find the area they will be covering. Then, they buy the stickers, apply them, and are ready to mail the envelope.

Common Core Standards: 6.G.1
Problem #: 
59 (2019-2020)
Problem Difficulty Level: [?]