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" Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30| square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. "
How to Become Quick at Figures: Comprising the Shortest, Quickest, and Best ... - Page 115
by D. M. Garret - 1886 - 190 pages
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A Textbook on Steam Engineering, Volume 1

Engineering - 1902 - 514 pages
.... sq. ft. 9 square feet =1 square yard . . . . sq. yd. 30J square yards = 1 square rod sq. rd. 160 square rods =1 acre A. 640 acres =1 square mile ... . sq. mi. sq. mi. A. sq. rd. sq. yd. sq. ft. sq. in. 1 = 640 = 102,400 = 3,097,600 = 27,878,400 = 4,014,489,600...
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The Model Elementary Arithmeti:c: Oral and Written, Part 2

Edward Gideon - Arithmetic - 1902 - 182 pages
...foot, sq. ft. 9 square feet " 1 square yard, sq. yd. 30 \ square yards " 1 square rod, sq. rd. 160 square rods " 1 acre, A. 640 acres " 1 square mile, sq. mi. 1 acre = 160 sq. rd. = 4840 sq. yd. = 43560 sq.ft. In measuring land, 16 square rods are 1 square chain...
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Graded Mental Arithmetic: Arranged for Use in the Public Schools from Third ...

Frank J. Browne - Mental arithmetic - 1902 - 176 pages
...square yard (sq. yd.) 30 square yards = 1 square rod (sq. rd.) 272 square feet = 1 square rod. 160 square rods = 1 acre (a.) 640 acres = 1 square mile (sq. mi.) The unit of Land Measure is the acre, subdivided as follows: — 625 square links = 1 square rod (sq....
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The Elements of Arithmetic in Theory and Practice

John William Hopkins, Patrick Healy Underwood - Arithmetic - 1903 - 576 pages
...foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30J square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. mi.) 10 square chains = 1 acre 1 acre = 4840 square yards 1 section = 1 square mile 36 sections = 1 township...
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Primary Arithmetic

John William Hopkins - Arithmetic - 1903 - 240 pages
...foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30 1 square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq. mi.) EXERCISE 49 (Oral and Written) 2. How many square yards are in 4 sq. rd. ? In 7 sq. rd.? In 11 sq....
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Mathematics

American School (Chicago, Ill.) - Engineering - 1903 - 428 pages
...foot (sq. ft.) 9 square feet = 1 square yard (sq. yd). 30^ square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A) 640 acres = 1 square mile (sq. mi.) We are now using a known amount of surface as a unit. Observing the table we see that instead of 12...
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New Primary Arithmetic

John Henry Walsh - Arithmetic - 1903 - 240 pages
.... . = 1 square yard . . . sq. yd. 30J sq. yd., or 272J sq. ft. . . = 1 square rod . . . sq. rd. 160 square rods = 1 acre A. 640 acres =1 square mile . . . sq. mi. 1 A. = 160 sq. rd. = 4840 sq. yd. = 43,560 sq. ft. A Section of land is a square mile. Roofing, flooring,...
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Graded School Arithmetic, Volume 1

Frank J. Browne - Arithmetic - 1903 - 232 pages
...square yard (sq. yd.) 30i square yards = 1 square rod (sq. rd.) 272i square feet = 1 square rod. 100 square rods = 1 acre (a.) 640 acres = 1 square mile (sq. mi.) 2. (live the dimensions of 25% of a square foot. 3. How many half-yards on one side of a square rod?...
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New Grammar School Arithmetic, Part 1

John Henry Walsh - Algebra - 1903 - 270 pages
...feet =1 square yard . . . sq. yd. 30\ sq. yd., or 272J sq. ft. . . = 1 square rod . . . sq. rd. 160 square rods = 1 acre A. 640 acres = 1 square mile . . . sq. mi. 1 A. = 100 sq. rd. = 4840 sq. yd. = 43,560 sq. ft. A Section of land is a square mile. Koofing, flooring,...
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Arithmetic, Mensuration and Use of Letters in Formulas, Principles of ...

International Correspondence Schools - Arithmetic - 1904 - 656 pages
...square feet = 1 square yard . . . . sq. yd. 30^ square yards . . . . . . = 1 square rod sq. rd. 160 square rods . =1 acre A. 640 acres =1 square mile . . . . sq. mi. sq. mi. A. sq. rd. sq. yd. sq. ft. -sq. in. 1 = 640 = 102,400 = 3,097,600 = 27,878,400 = 4,014,489,600...
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