John has a piece of cardboard, shaped like a rectangle, that measures 7 inches × 9 inches. What is the area of this piece of cardboard?
square inches
A city planner drives 3 kilometers west, then 2 kilometers north, then 3 kilometers east, and finally 2 kilometers south, to return to his starting point. How many square kilometers are in the area the city planner drove around?
square kilometers
