题目

阅读理解 It is prettymuch a one-way street. While it may be common for university researchersto try their luck in the commercial world, there is very little traffic in the oppositedirection. Pay has always been the biggest deterrent, as people with families oftenfeel they cannot afford the drop in salary when moving to a university job. Forsome industrial scientists, however, the attractions of academia (学术界) outweigh any financial considerations. Helen Lee tooka 70% cut in salary when she moved from a senior post in Abbott Laboratories toa medical department at the University of Cam 要种一块面积为35.64 m2的圆形草地以美化家庭，它的半径应是多少m？(π取3.14，结果保留两位小数．)