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How to compare area in square cm Video Lecture - Class 5

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1. How do you calculate the area of a square in square cm?
Ans. To calculate the area of a square in square cm, you need to multiply the length of one of its sides by itself. For example, if a square has a side length of 5 cm, the area would be 5 cm multiplied by 5 cm, which equals 25 square cm.
2. Can you compare the areas of two different shapes using square cm?
Ans. Yes, you can compare the areas of two different shapes using square cm. To do this, you need to calculate the area of each shape separately using the appropriate formula and then compare the resulting values. The shape with a larger area in square cm would have a greater surface area.
3. How can I convert square inches to square cm for area comparison?
Ans. To convert square inches to square cm, you can use the conversion factor 1 square inch = 6.4516 square cm. Simply multiply the number of square inches by 6.4516 to get the equivalent area in square cm. This conversion allows you to compare areas in different units.
4. Is it possible to compare the areas of irregular shapes using square cm?
Ans. Yes, it is possible to compare the areas of irregular shapes using square cm. However, since irregular shapes do not have a simple formula for calculating their area, you may need to break them down into smaller regular shapes or use more complex mathematical methods such as integration. By finding the areas of the individual components and summing them up, you can compare the overall areas in square cm.
5. How can I measure the area of an object in square cm without a ruler?
Ans. If you do not have a ruler, you can still measure the area of an object in square cm using other methods. One approach is to use graph paper and count the number of squares that the object covers. Each square on the graph paper represents a certain area (e.g., 1 square cm). By counting the squares, you can estimate the total area in square cm. Another method is to use a smartphone app that utilizes the camera and image recognition technology to measure the area of objects.
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