Q3: A pentagon-shaped saddle containing four rain-gauging stations. The coordinates of each of the five sides of the sill and the four rain-gauging stations, in addition to the annual rainfall rate at these stations, are given in the table below. Calculate: (a) the total sinusoidal area. b- The annual rainfall rate over this plain, according to the Thyssen method. coordinates coordinates coordinates coordinates coordinates corner d corner m corner c corner b corner a X Y X X YV Jabiya limits 60 140 120 80 120 0 0 0 The above distances are measured in kilometers Istation R (station 0 station P Rain station limits. X Y X X Y 80 60 80 20 40 20 100 110 120 annual rain (cm) X 80 0 station? X Y 40 80 125 X Q3: A pentagon-shaped saddle containing four rain-gauging stations. The coordinates of each of the five sides of the sill and the four rain-gauging stations, in addition to the annual rainfall rate at these stations, are given in the table below. Calculate: (a) the total sinusoidal area. b- The annual rainfall rate over this plain, according to the Thyssen method. coordinates coordinates coordinates coordinates coordinates corner d corner m corner c corner b corner a X Y X X YV Jabiya limits 60 140 120 80 120 0 0 0 The above distances are measured in kilometers Istation R (station 0 station P Rain station limits. X Y X X Y 80 60 80 20 40 20 100 110 120 annual rain (cm) X 80 0 station? X Y 40 80 125 X Q3: A pentagon-shaped saddle containing four rain-gauging stations. The coordinates of each of the five sides of the sill and the four rain-gauging stations, in addition to the annual rainfall rate at these stations, are given in the table below. Calculate: (a) the total sinusoidal area. b- The annual rainfall rate over this plain, according to the Thyssen method. coordinates coordinates coordinates coordinates coordinates corner d corner m corner c corner b corner a X Y X X YV Jabiya limits 60 140 120 80 120 0 0 0 The above distances are measured in kilometers Istation R (station 0 station P Rain station limits. X Y X X Y 80 60 80 20 40 20 100 110 120 annual rain (cm) X 80 0 station? X Y 40 80 125 X