# why normal surface pressure over wedged cone is greater than freestream pressure

I came across this question in "Fundamentals of Aerodynamics" by John Anderson, although I knew how to solve the question, I didn't understand why we had the surface pressure on the wedge 1.31×10^5 N/m^2 higher than the freestream pressure 1.01×10^5 N/m^2, I thought it is intuitive to consider the freestream pressure always higher than surface pressure.