1 Press Ctrl-A ©G Dear 2009 – Not to be sold/Free to use Surveying Stage 6 - Year 11 General Mathematics Preliminary

2 3.2 Areas from Field Diagrams (1/2) Traverse Survey Used to calculate area of irregular shapes. Field Diagram: Start 0 End Scale Diagram: 3 cm. 1 cm. 2.5 cm 1.5 cm

3 B A Areas from Field Diagrams (2/2) Traverse Survey Area: A A = 0.5 x b x h = 0.5 x 30 x 15 = 225 A B = 0.5 x b x h = 0.5 x 30 x 10 = 150 A Total = A A + A B Scale Diagram: = =