In the figure above, the area of square region PRTV is 81, and the ratio of the area of square region XSTU to the area of square region PQXW is 1 to 4. What is the length of segment RS?
5
5.5
6
6.5
7
登录 或 注册 后可以参加讨论
一开始算复杂了, 其实只要了解正方形面积比是4倍边长比是2倍就行了,即面积比等于变长比的平方
一开始算复杂了, 其实只要了解正方形面积比是4倍边长比是2倍就行了,即面积比等于变长比的平方