Mark leaves his tent and walks 12 km on a bearing of 045°. He then walks 16 km on a bearing of 275°. a) Make a scale drawing of Mark's walk. Use a scale of 1 cm represents 2 km. b) How far must Mark now walk in a straight line to return to his tent? a) [Scale drawing needed] b) 26 km c) 28 km d) 24 km