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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.

A Grammar Shcool Arithmetic - Page 174
by George Albert Wentworth - 1886 - 372 pages
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Chemistry and Uses of Insecticides

Elmer Ralph De Ong - Insecticides - 1948 - 362 pages

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Modern-school Geometry

John Roscoe Clark - Geometry, Plane - 1948 - 456 pages

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Arithmetic in Agriculture

Theodore Herman Fenske - Agriculture - 1948 - 180 pages

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The Secretary's Handbook: A Manual of Correct Usage

Sarah Augusta Taintor, Kate M. Monro - Letter-writing - 1949 - 602 pages

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Mathematics, Volume 1

United States. Bureau of Naval Personnel - Mathematics - 1951 - 280 pages

...millimeters (mm.) 1 nautical (sea) mile = ff statute (land) miles 2. SQUARE MEASURE OR MEASURES OF SURFACE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30.25 square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) = 43,560 sq. ft. 640 acres...

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