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The table shows recordings from surveyors’ field book.
Mathsf2midq21

  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.

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  1. Mathsf2mida21
  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
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