What is the formula for expressing China's land area of 9.6 million square kilometers by science and technology? Thank god, help me.

China's land area of 9.6 million square kilometers is measured by one scale, which is no joke. Why can't the land area be measured? This is because the national shape of China is neither square nor round, so it cannot be measured by a ruler. Because the land shape in China is irregular, we can only draw a map of China on a unified piece of paper according to the scale, and then cut it out according to the boundary line. The first step is to weigh the cut map of China with a balance (or an accurate scale) and write down the weight. Step 2, cut out a square figure in the middle of this map of China, weigh the square, then divide the weight by the square area to get the weight of the map unit area, and finally divide the weight of the map of China obtained in step 1 by the weight of the unit area obtained in step 2 to get the land area of China. Therefore, China's 9.6 million square kilometers are first measured with a ruler, not a ruler! Similarly, if you want to know the area of irregular farmland in rural areas, you can also take pictures of the farmland to be measured with a camera, and then cut out the photos and weigh them according to the boundaries of the farmland. Finally, cut a square on the photo and calculate the photo weight per square centimeter. Then divide the weight of the cut farmland photo by the weight of the square centimeter photo, and then multiply the number by the scale to get the area of the farmland to be measured. Note: the scale of the photo can be a square in the middle of the farmland, and then the square is photographed at the same distance as before, and then the scale of the distance from the photo is calculated according to the above method. Therefore, using a scale is the best way to measure the area of irregular graphics! By the way, to measure the volume of irregular stones is to put the stones in a cup filled with water, and then measure the volume of water discharged, which is the volume of stones-this is the Archimedes method in Europe!

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