Hectares

[yellowbelly]

Am I too late with my sixpeneth??
6.7554ha.

 

[Robigus]

If you can't measure one of the angles measure one of the diagonals.
Easiest way is to convert everything into triangles, it's how much of the original Ordinance Survey was done.

 

[Philip Watkins]

If you can't measure one of the angles measure one of the diagonals.
Easiest way is to convert everything into triangles, it's how much of the original Ordinance Survey was done.

It's how all the original OS maps were done. That's why the country is littered with trig points.

 

[Kiwi Pete]

I pick very close to 5.75 ha
Depending, of course, which corner's the square one?

 

[Kiwi Pete]

perimeter adds up - so if its this shape then it's this big...

 

[GTB]

@Hilly on the RPW website we can click on interactive map then click on the field to get it's area to show up. If it's not your field you have to draw a line around the perimiter to show the area. Surely you can do this where you are too?

 

[bovrill]

View attachment 539284
perimeter adds up - so if its this shape then it's this big...

If all the sides were curved, to the point where that perimeter were actually a circle, then the area would be 8.4ha.

 

[7610 super q]

That'll teach folks to use hectares instead of acres.............

 

[GTB]

If all the sides were curved, to the point where that perimeter were actually a circle, then the area would be 8.4ha.

So why the feck are all fields square? They'd be much bigger if they were round!

 

[Kiwi Pete]

So why the feck are all fields square? They'd be much bigger if they were round!

That's why the population has grown so much since the world was flat.

 

[GTB]

That's why the population has grown so much since the world was flat.

You mean to say it isn't flat?

 

[Kiwi Pete]

You mean to say it isn't flat?

Just boss farmers bit.

 

[Goweresque]

If you can't measure one of the angles measure one of the diagonals.
Easiest way is to convert everything into triangles, it's how much of the original Ordinance Survey was done.

You still can't calculate the area of an irregular quadrilateral with just the external measurements and without an internal angle. Mathematically it can't be done. The perimeter length of an irregular shape does not determine its internal area.

 

[bovrill]

So why the feck are all fields square? They'd be much bigger if they were round!

Even if you decided to keep the fields the same size, you'd end up with a lot less headland and hedge to maintain!

 

[Hilly]

@Hilly on the RPW website we can click on interactive map then click on the field to get it's area to show up. If it's not your field you have to draw a line around the perimiter to show the area. Surely you can do this where you are too?

I cant get on rpa at the moment and its slow and useless the google one is easy and bang on as have measured other fileds i know and its spot on, i find all government web sites crap do others ?

 

[Hilly]

Round fields in america with irrigation pivots , loose the corners tho lol

 

[Derrick Hughes]

Why is it so important

 

[colhonk]

Yep. All Gov web sites cr%p.

 

[RobFM]

Hey all - a bit late to this but we have built this into fieldmargin (www.fieldmargin.com) its in the apps and on the web version. All free to use.

 

[deere66]

You still can't calculate the area of an irregular quadrilateral with just the external measurements and without an internal angle. Mathematically it can't be done. The perimeter length of an irregular shape does not determine its internal area.

Exactly. If you "squashed" it one way or the other it would be much smaller