讲解一下这道题，并归纳出思维方法---**Extraction Content:** **Question 12:** 街心花园中一个正方形的花坛四周有1米宽的水泥路。如果水泥路的总面积是16平方米，花坛的面积是多少平方米？ **Chart/Diagram Description:** * **Type:** Geometric diagram showing a square flower bed inside a larger square area, representing the flower bed surrounded by a path. * **Main Elements:** * An inner square labeled "花坛" (Flower Bed). * An outer square enclosing the flower bed and the surrounding path. * The region between the inner and outer squares represents the path. * A double-headed arrow indicates the width of the path between the inner and outer squares is 1米 (1 meter). **Other Relevant Text:** * 12 * (Question number with asterisk) * 本单元结束， (This unit ends,) * 我知道了1厘米和... (I know 1 centimeter and...) * 我的收获是: ____ (My harvest is: ____) * 抖抖音抖行行da66 (Watermark/Text in the background)