12. Units of Length
Name
|
Symbol
|
Value
|
inch
|
in
|
1 in = 0.83333 ft
|
foot
|
ft
|
1 ft = 12 in
|
yard
|
yd
|
1 yd = 3 ft
|
rod
|
rd
|
1 rd = 16.5 ft
|
furlong
|
fur
|
1 fur = 40 rd
|
U.S. mile
|
mi
|
1 mi = 8 fur = 5280 ft
|
nautical mile
|
nautical mile
|
1 nautical mile = 1852 m = 6076.1149 ft (approx.)
|
13. Units of Area
Name
|
Symbol
|
Value
|
sq. inch
|
in2
|
1 in2 = 0.006444 ft2
|
sq. foot
|
ft2
|
1 ft2 = 144 in2
|
sq. yard
|
yd2
|
1 yd2 = 9 ft2
|
sq. rod
|
rd2
|
1 rd2 = 272.25 ft2
|
acre
|
acre
|
1 acre = 160 rd = 43 560 ft2
|
sq. mile
|
mi2
|
1 mi2 = 640 acre
|
township
|
|
1 township = 6 mi2
|
14. Units of Liquid Volume
Name
|
Symbol
|
Value
|
gill
|
gi
|
1 gi = 0.25 pt
|
pint
|
pt
|
1 pt = 4 gi
|
quart
|
qt
|
1 qt = 2 pt
|
gallon
|
gal
|
1 gal = 4 qt = 8 pt = 32 gi
|
15. Units of Volume
Name
|
Symbol
|
Value
|
cu. inch
|
in3
|
1 in3 = 0.0005787 ft3
|
cu. foot
|
ft3
|
1 ft3 = 1728 in3
|
cu. yard
|
yd3
|
1 yd3 = 27 ft3
|
16. Apothecaries’ Units of Liquid Volume
Name
|
Symbol
|
Value
|
minim
|
min
|
1 min = 0.016666 dr
|
fluid dram
|
fl dr
|
1 fl dr = 60 min
|
fluid ounce
|
fl oz
|
1 fl oz = 8 fl dr
|
pint
|
pt
|
1 pt = 16 fl oz
|
quart
|
qt
|
1 qt = 2 pt
|
gallon
|
gal
|
1 gal = 4 qt
|
17. Units of Dry Volume