I am looking at a map of a piece of land. It has 4 sides:
1) 146m
2)155m
3) 62m
4) 116m
How do i work out the area in hectares?
2007-01-19 02:12:36 · 6 answers · asked by stav_rock 2 in Science & Mathematics ➔ Engineering
Draw a line through the middle of the piece of land to make two triangles.
The area of each triangle = SquareRoot(s * (s - a) * (s - b) * (s - c)) where s = (a + b + c) / 2 and a,b,c are the lengths of the triangle sides
Add the two triangle areas together to give area in m2.
To get hectares divide by 10000.
2007-01-19 23:38:19 · answer #1 · answered by Rowdy 3 · 1⤊ 0⤋
You need to know if the land is flat.
Check the contour lines on the map first.
If the land is on a slope, the size will be bigger than a simple area calculation suggests.
2007-01-23 04:37:26 · answer #2 · answered by Steve B 7 · 0⤊ 0⤋
Draw a rectangle around it, work out that area, then work out the area of each of the triangles of the area between your piece of land and the imaginary rectangle, subtract them and you have your area in square metres, then convert to hectares
2007-01-19 10:24:09 · answer #3 · answered by Klamidia 2 · 2⤊ 2⤋
I would suggest breaking it down into a rectangle & triangles…
2007-01-19 10:23:14 · answer #4 · answered by Mr Crusty 5 · 1⤊ 1⤋
Rowdy's answer is more appropriate.
2007-01-22 05:07:23 · answer #5 · answered by Ishfaq A 3 · 0⤊ 0⤋
get off me land townie.
2007-01-19 10:22:56 · answer #6 · answered by peter o 5 · 0⤊ 2⤋