 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 174by George Albert Wentworth - 1886 - 372 pagesFull view - About this book
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...centimeter, the square meter, et cetera, found in the metric system of measurement. TABLES OF AREAS 144 square inches (sq. in.) = 1 square foot (sq. ft.). 9 square feet = 1 square yard (sq. yd.). 30i square yards = 1 square rod (sq. rd.). 160 square rods = 1 acre (A). 640 acres = 1 square mile... | |
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...States effective July 1, 1954. The value expressed in feet became effective July 1, 1959. AREA MEASURE ' 144 square inches (sq in.) = 1 square foot (sq ft) 9 square feet = 1 square yard (sq yd) = 1 296 square inches 30 % square yards =1 square rod (sq rd) = 272>i square feet 160 square rods =1... | |
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