WME@Kimpton Middle
Area of a RectangleYou aleady know how to measure lengths. Basicaly you use standard lengths marked on a ruler to do it. Now let's turn our attention to measuring surface area. We need area measurements for such common questions: how much wall paper do we need for your room? how many tiles are enough for the kitchen? We use a unit square as the basic unit for measuring areas. A 1cm square has an area of one square centimeter (cm^{2}). An inch square has an area of one square inch (in^{2}), and so on. We will find formulas for areas of common geometric shapes. But first we understand how areas are measured and why the formulas we will learn are indeed correct.

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