Question

The table shows recordings from surveyors’ field book.

1. Draw a sketch diagram from the data in the field book 
2. Given that the recordings are in metres, determine the area of the land in hectares.

Answer 1

1. 
   
2.    
   P=½x120x70=4200m²
   Q=½x80(75+40)=40x15=4600m²
   R=½x80x25=100m²
   S=½x120x80=4800m²
   T=½x60(80+50)=30x130=3900cm²
   V=½x100x50=2500m²
   Total area=4200+4600+1000+4800+3900+2500=21000m²
   =2.1ha