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【题目】有一个长方体形状的木块,其尺寸如图1所示(单位:厘米)。切在将它切成形状和大小完全一样的三个小长方体,这三个小长方体表面积的和比原来增加多少平方厘米?【思考与解答】从图1中我们可以看出,这个长方体的长、宽、高各不相同,把这个长方体切成形状和大小完全一样的三个小长方体,可以有三种不同的切法(如图2、图3、图4),每种切法都会增加四个面,这四个面的面积和就是增加的表面积。
【Subject】 There is a cuboid shape of the wood, the size shown in Figure 1 (unit: cm). Cut into it cut into exactly the same shape and size of the three small cuboid, the three small cuboid surface area and increase than the original number of square centimeters? [Reflections and Answers] From Figure 1 we can see that the length of the box , The width and the height are different. Cut the cuboid into three small cubes with exactly the same shape and size. There are three different methods (Fig. 2, Fig. 3 and Fig. 4) The area of these four faces is the increased surface area.