the figure shows a square patio surrounded by a walkay of width x meters. if the area of the walkway is 132 square meters and the width of the patio is 5 meters greater than the width of the walkway, what is the area of the patio in square meters?
抱歉,图画不上来,就是一个大的正方形里边套一个小正方形。
答案给的是64.
可是即使64带入进去也不对啊,因为右边的width给的是 2 inch, 实际上应该是3 meter 才能是64成立。