Question

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The following details are notes in meters in the field book of a surveyor. Find the area of the fields.​

Answer 1

8900

Explanation:

there are 4 triangles and 1 trapezoid in the shape

the area of first triangle

½×40×60

20×60

1200

the area of second triangle

½×(30+60)×60

½×90×60

30×90

2700

the area of third triangle

½×(40+30)×60

½×70×60

30×70

2100

the area of fourth triangle

½×30×30

15×30

450

the area of the trapezoid

½×(30+40)×(30+40)

½×70×70

35×70

2450

the area of the field

1200+2700+2100+450+2450

8900

note: the attached shape is got from the table and the shape is not made to accuracy