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You can count the squares individually, but it is much easier to multiply 3 times 5 to find the number more quickly. The formulas you are going to look at are all developed from the understanding that you are counting the number of square units inside the polygon. These formulas help you find the measurement more quickly than by simply counting.
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Assess conceptual knowledge with the word problems. To help you find the area of the many different categories of polygons, mathematicians have developed formulas. Perimeter of Squares Worksheets Focusing on finding the perimeter of squares, the worksheets here provide adequate practice in finding the perimeter of squares with integer, decimal and fraction dimensions, learn to find the diagonal and the side length using the perimeter and much more. You can write “in 2” for square inches and “ft 2” for square feet. 4 to get 16 squares! And this can be generalized to a formula for finding the area of a square with any length, s: Area = s.Since there are 4 rows of 4 squares, you can multiply 4 Counting out 16 squares doesn’t take too long, but what about finding the area if this is a larger square or the units are smaller? It could take a long time to count.įortunately, you can use multiplication. You can count that there are 16 squares, so the area is 16 square units. When finding the area of a polygon, you count how many squares of a certain size will cover the region inside the polygon. Examples of square units of measure are square inches, square centimeters, or square miles. You measure area in square units of a fixed size. The area of a two-dimensional figure describes the amount of surface the shape covers.