A UMass student needs to get from Hasbeen Physics building to Witless Administration building. To get from one to the other she walks 200 m due South along N. Pleasant St., then 150 m due Southwest along the pond (cutting through any construction fence as needed), then another 30 m due South, to arrive at the front door of Witless. How far is it from Hasbeen to Witless in a straight line