
The figure shows a square patio surrounded by a walkway 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?
56
64
68
81
100
咋带入?
先列出等式,然后答案明显可以排除56.68,64边长为8, 81为9, 100为10,代进去就可以
好的,谢谢登录 或 注册 后可以参加讨论
width of the patio is 5 meters greater than the width of the walkway,是patio比walkway的边长大5,所以patio的边长应该是x+5,你的(m+2(m-5))的平方是什么?登录 或 注册 后可以参加讨论
不能排除吧?题目没说x是整数?登录 或 注册 后可以参加讨论