Set up and solve contextual measurement problems that require choosing the correct geometric formula and units.
Identify what the context is asking to measure
Problem
Mia wants to paint the outside of a rectangular storage box. Name the geometric quantity that measures how much surface must be covered.
Big Picture
What this problem is really about
Start by classifying the feature the paint covers. It spreads across every exterior face of a three-dimensional box, so the needed quantity must total several two-dimensional regions rather than measure an edge or the space inside. Imagine unfolding the box into a net to connect the context with the appropriate geometric measure.
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