 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.  Junior High School Mathematical Essentials - Page 311by J. Andrew Drushel, John William Withers - 1926Full view - About this book
 | Edgar Arthur Singer - Mental arithmetic - 1876 - 198 pages
...inches (sq. in.) are 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. mi. In measuring land, IS square rods are 1 Bquare chain (sq. ch.), and 10 square chains are 1... | |
 | Joseph Ray - Arithmetic - 1877 - 402 pages
...inches make 1 square foot, marked sq. ft. 9 square feet " 1 square yard, " sq. j'd. 30J- square yards " 1 square rod, " sq. rd. 160 square rods " 1 acre, A. 640 acres " 1 square mile, " sq. mi. 1. Reduce 8 sq. yd. to square inches. 10368 sq. in. 2. .Reduce 4 A. to square rods. 640 sq.... | |
 | Horatio Nelson Robinson - Arithmetic - 1877 - 212 pages
...Inches (sq. in.) make 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. mi. UNIT EQUIVALENTS. sq. ft. sq. in. sq. yd. 1 = 144 sq. rd. 1 = 9 = 1276 A. 1 = 30} = 272i =... | |
 | Horatio Nelson Robinson, Daniel W. Fish - Arithmetic - 1877 - 372 pages
...Inches (sq. in.) make 1 Square 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. UNIT EQUIVALENTS. sq. ft. sq. in. sq. yd. 1 = 144 sq. rd. 1 = 9 = 1296 A. 1 = 30J = 272J =... | |
 | William James Milne - Arithmetic - 1877 - 402 pages
...(sq. in.) = 1 Square 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. sq. mi. A. sq.rd. sq. yd. sq.ft. sq.in. 1 = 640 = 102400 = 3097600 = 27878400 = 4014489600... | |
 | Benjamin Greenleaf - Arithmetic - 1877 - 160 pages
...inches (sq. in.) are 1 square 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 square acres, 1 square mile, pq. m. 73. 1. How many square inches in 1 square foot ? In 1 twelfth of... | |
 | Joseph Ray - Arithmetic - 1879 - 200 pages
...marked sq. ft. 9 square feet " 1 square yard, " sq. yd. 30J square yards " 1 square rd. or perch, " sq. rd. 160 square rods " 1 acre, " A. 640 acres " 1 square mile, " sq. mi. MENTAL EXERCISES. 1. How many square feet in 3 square yards? In 2 sq. yd.? In 5 sq. yd.?... | |
 | Henry Bartlett Maglathlin, Benjamin Greenleaf - Arithmetic - 1831 - 386 pages
...(sq. in.) are 1 square foot, sq. ft. 9 square feet " 1 square yard, sq. yd. 3(ty square yards, or 272J sq. ft. " 1 square rod, sq. rd. 160 square rods " 1 acre, A. 640 acres " 1 square mile, or section, sq. mi An acre contains 43,560 square feet. A rood (R.) is 40 square rods. ORAL EXERCISES.... | |
 | Henry Bartlett Maglathlin - Arithmetic - 1881 - 418 pages
...(sq. in.) are 1 square foot, sq. ft. 9 square feet " 1 square yard, sq. yd. 30^ square yards, or 272J- sq. ft. " 1 square rod, sq. rd. 160 square rods " 1 acre, A. 040 acres . " 1 square mile, or section, sq. mi. An acre contains 43,560 square feet. A. rood (R.)... | |
 | Henry Bartlett Maglathlin - Arithmetic - 1882 - 398 pages
...in.) are ] square foot, sq. ft. 9 square feet " 1 square yard, sq. yd. 30£ square yards, or 272 \ sq. ft. " 1 square rod, sq. rd. 160 square rods " 1 acre, A. 640 acres " 1 square mile, or section, sq. mi. An acre contains 43,560 square feet. A rood (K.) is 40 square rods. ORAL EXERCISES.... | |
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