You have studied in earlier classes about figures of different shapes such as squares, rectangles, triangles and quadrilaterals. You have also calculated perimeters and the areas of some of these figures like rectangle, square etc. For instance, you can find the area and the perimeter of the floor of your classroom. Let us take a walk around the floor along its sides once; the distance we walk is its perimeter. The size of the floor of the room is its area

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