Use units to guide multi-step problem solving and choose/interpret units, scales, and graph origins.
Choose the correct unit for a measured quantity
Problem
State the unit for the calculated area of a rectangular garden measured in feet.
Big Picture
What this problem is really about
Let the kind of quantity determine the unit, not just the object’s dimensions. Area multiplies one length by another, so the length unit is multiplied by itself and must be squared; a plain length unit would describe only one-dimensional distance.
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