我们在解决问题时,如果对于有些问题进行深入研究,就会发现其中的解题规律。运用规律解决问题,可以很快地算出结果。请看下面这道题:一个正方形的面积是120平方厘米,如果在这个正方形内画一个最大的圆,你能算出这个圆的面积是多少平方厘米吗?解答此题,我们可先设正方形内最大圆的 When we solve the problem, if we do some research on some problems, we will find the law of solving the problem. Use the law to solve the problem, you can quickly calculate the result. See the following question: a square area is 120 square centimeters, if you draw the largest circle in this square, you can calculate the area of ​​the circle is how many square centimeters it? Answer this question, we can set the maximum square round