Sistem Satuan

Satuan yg umum digunakan dlm pengukuran pemetaan ada 4 yaitu meliput :

1.    Satuan Panjang (meter, feet, inch)

2.    Satuan Luas (m2, hektar, acre)

3.    Satuan Volume (m3, liter)

4.    Satuan Sudut (drajat, radian, grade)

1.    Satuan Panjang

·       1 km = 1.000 m

·       1 m = 100 cm

·       1 cm = 0.01 m = 10¯² m

·       1 mm = 10¯ᶾ m

·       1 inchi (in) = 2.54 cm

·       1 feet (ft) = 30.48 cm

·       1 feet (ft) = 12 in

·       1 cm = 0.393 in

·       1 m = 39.37 in

·       1 yard = 0.914 m

2.    Satuan Luas   

·       1 Hektar (Ha) = 10.000 m²

·       1 km = 100 Hektar (Ha)

·       1 Hektar (Ha) = 0.01 Km² = 10.000 m²

·       1 Acre = 4.046,9 m² = 0.0469 Hektar (Ha)

·       1 Hektar (Ha) = 2,471 Acre

3.    Satuan Volume

·       1 Liter = 1.000 cm ᶾ  = 61.02 in ᶾ = 0.03532 ft ᶾ

·       1 m ᶾ = 1.000 Liter = 35.32 ft ᶾ

·       1 ft ᶾ = 0.02832 m ᶾ = 28.32 Liter

4.    Satuan Sudut

Ø Sistem Sexagesimal

·       1 Lingkaran = 360 °

·       1 ° = 60 ‘

·       1 ‘ = 60 ‘’

Ø Sistem Sentisimal

·       1 Lingkaran = 400 Grade (g)

·       1 Grade = 10 Centigrade (c)

·       1 Centigrade = 10 Centi centi grade (cc)

Ø Sistem Radian

·       1 Lingkaran = 2 π Radian

·       1 Radian = 180 °/ π = 57° 17’ 44.81’

·       1 Derajat = π / 180 ° = 0.017 Radian