问题:如下图所示,李叔叔用纸板做了一个学具,你能算出它的体积吗?思路点睛:从图上可以看出,这是一个不规则的立体图形,应该是上头斜着切下了一块,造成了右边的高度比左边的高度少了2cm。现在要求它的体积,如果还想按照原先的方法来解答,则非常困难。怎么办?由这个图形是个不规则的图形,我们想到:如果能把它变成一个规则的图 Question: As shown below, Uncle Lee made a learning board with cardboard, can you figure out the volume of it? Ideas dot: As can be seen from the figure, this is an irregular three-dimensional graphics, it should be oblique Under the piece, resulting in the right height than the left height of 2cm. Now it is very difficult to ask for its size, if you still want to answer the original method. What to do? By this graph is an irregular graph, we think: If we can turn it into a regular graph