Books Books 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. A Grammar Shcool Arithmetic - Page 174
by George Albert Wentworth - 1886 - 372 pages ## Social Arithmetic, Book 1

Frank Morton McMurry, Charles Beverley Benson - Arithmetic - 1926 - 364 pages
...LENGTH 12 inches (in.) = 1 foot (ft.) 3 feet = 1 yard (yd.) 5280 feet = 1 mile (mi.) SQUARE MEASURE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 43,560 square feet = 1 acre (A.) 640 acres = 1 square mile (sq. mi.) TIME 60 seconds (sec.) = 1 minute... ## Junior High School Mathematical Essentials, Volume 9

J. Andrew Drushel, John William Withers - Mathematics - 1926 - 336 pages
...liquid qt. 1 liter =about| .9 dry qt. (64 cu. in. 1 hektoliter -about 2.8 bu. 311 Measures of Surface 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30i sq. yd. or 2721 sq. ft. = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square... ## Preparatory Mathematics for the Building Trades

Harold B. Ray, Arnold V. Doub, Oka Frank Carpenter - Arithmetic - 1927 - 88 pages
...(ft.) 3 feet = 1 yard (yd.) 16\$ feet or 5\ yards = 1 rod (rd.) 320 rods = 1 mile (mi.) Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 272J square feet or 30j square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) Cubic Measure... ## A Second Course in the New Mathematics

Edward Ira Edgerton, Perry Amherst Carpenter - Mathematics - 1928 - 392 pages ## Teachers' Manual to Accompany the Problem and Practice Arithmetics, Volume 1

David Eugene Smith, Eva May Luse, Edward Longworth Morss - Arithmetic - 1929 - 504 pages ## Teachers' Manual to Accompany the Problem and Practice Arithmetics, Volume 2

David Eugene Smith, Eva May Luse, Edward Longworth Morss - Arithmetic - 1929 - 536 pages ## A Laboratory Course in Everyday Physics

Carleton John Lynde - Physics - 1931 - 344 pages 