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square kilometre: km2 km 2: US spelling: square kilometer: 1.0 km 2 (0.39 sq mi) km2 sqmi; square metre: m2 m 2: US spelling: square meter: 1.0 m 2 (11 sq ft) m2 sqft; square centimetre: cm2 cm 2: US spelling: square centimeter: 1.0 cm 2 (0.16 sq in) cm2 sqin; square millimetre: mm2 mm 2: US spelling: square millimeter: 1.0 mm 2 (0.0016 sq in ...
One acre equals 1 ⁄ 640 (0.0015625) square mile, 4,840 square yards, 43,560 square feet, [2] or about 4,047 square metres (0.4047 hectares) (see below).While all modern variants of the acre contain 4,840 square yards, there are alternative definitions of a yard, so the exact size of an acre depends upon the particular yard on which it is based.
≡ 1 atm × 1 cm 3 /min = 1.688 75 × 10 −3 W: atmosphere-cubic centimetre per second: atm ccs [citation needed] ≡ 1 atm × 1 cm 3 /s = 0.101 325 W: atmosphere-cubic foot per hour: atm cfh [citation needed] ≡ 1 atm × 1 cu ft/h = 0.797 001 247 04 W: atmosphere-cubic foot per minute: atm cfm [citation needed] ≡ 1 atm × 1 cu ft/min = 47 ...
The rod is useful as a unit of length because integer multiples of it can form one acre of square measure (area). The 'perfect acre' [2] is a rectangular area of 43,560 square feet, bounded by sides 660 feet (a furlong) long and 66 feet (a chain) wide (220 yards by 22 yards) or, equivalently, 40 rods by 4 rods. An acre is therefore 160 square ...
1 square inch = 6.4516 cm 2 or 1 ⁄ 144 sq. feet 1 square foot = 0.09290304 m 2 or 1 ⁄ 9 sq. yards, or 144 sq. inches 1 square yard = 0.83612736 m 2 or 1 ⁄ 400 evleks, 1 ⁄ 1600 donums, or 9 square feet 1 evlek = 334.450944 m 2 or 1 ⁄ 4 donum, 400 square yards, or 3600 square feet 1 square mile = 2.589988110336 km 2 or 640 acres, or ...
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The only thing that changed was the number of feet and yards in a rod or a furlong, and the number of square feet and square yards in an acre. The definition of the rod went from 15 old feet to 16 + 1 ⁄ 2 new feet, or from 5 old yards to 5 + 1 ⁄ 2 new yards. The furlong went from 600 old feet to 660 new feet, or from 200 old yards to 220 ...
1 square foot = 144 square inches, where 144 = 12 2 = 12 × 12. Similarly: 1 square yard = 9 square feet; 1 square mile = 3,097,600 square yards = 27,878,400 square feet; In addition, conversion factors include: 1 square inch = 6.4516 square centimetres; 1 square foot = 0.092 903 04 square metres; 1 square yard = 0.836 127 36 square metres