 | George Albert Wentworth, Thomas Hill - Arithmetic - 1881 - 446 pages
...miles per hour ? (One hour = 3600 seconds.) ono MEASURES OP SURFACE. 144 square inches (sq. in.) = 1 square foot (sq. ft.) . 9 square feet = 1 square yard (sq. yd.). 30i square yards, or) . , . , «>,r,, j- ar = 1 square rod (sq. rd.). 272i square feet J 160 square... | |
 | George Albert Wentworth, Thomas Hill - Arithmetic - 1882 - 376 pages
...miles per hour ? (One hour = 3600 seconds.) nnq MEASURES OF SURFACE. 144 square inches (sq. in.) = 1 square foot (sq. ft.) . 9 square feet = 1 square yard (sq. yd.). 30} square yards, or) .. , , , . 0»oi tjr — 1 square rod (sq. rd.). 272} square feet J ' \--rv 160 square rods, or!... | |
 | Henry Bartlett Maglathlin - Arithmetic - 1882 - 398 pages
...used in measuring surfaces. An Inch Hyuan, or Square Inch. TABLE. 144 square inches (sq. 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... | |
 | Henry Francis Harrington - Spellers - 1880 - 208 pages
...Square Measure. Surface or Square Measure is used in computing surfaces. 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.). 12 inches (in ) — 1 foot... | |
 | Henry Bartlett Maglathlin - Arithmetic - 1882 - 212 pages
...Measures arc those used in measuring surfaces. I Square Inch. TABLE. 144 square 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. 219. ORAL EXERCISES. 1. How long... | |
 | Eugene Henry Barker - Mathematics - 1920 - 264 pages
...out race-courses, is 40 rods or one eighth of a mile. Surface Measures 144 Square Inches (sq. in.)= 1 Square Foot (sq. ft.) 9 Square Feet = 1 Square Yard (.sq. yd.) 30 J Square Yards = 1 Square Rod (sq. rd.) 160 Square Rods = 1 Acre (A.) 640 Acres - 1 Square Hile (sq.... | |
 | Marie Gugle - Mathematics - 1920 - 238 pages
...mi., used in measuring distances at sea. B. Square Measure for Surface 144 square inches (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.... | |
 | Franklin Sherman Hoyt, Harriet E. Peet - Arithmetic - 1920 - 386 pages
...water. A knot =1.15 mi.; used in measuring distances at sea. SURFACE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 301 square yards = 1 square rod (sq. rd.) 160 square rods = 1 acre (A.) 640 acres = 1 square mile (sq.... | |
 | Theodore Lindquist - Mathematics - 1920 - 260 pages
...cable length. 1.15 common miles = 1 knot (nautical mile). Square Measure 144 square inches (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... | |
 | George Pease Lord - Arithmetic - 1920 - 284 pages
...Measure 481. Square Measure is used in measuring extent of surfaces. TABLE 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.) 40 square rods = 1 rood (R.) 4 roods = 1 acre (A.) 640 acres... | |
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Square Measure 144 square inches (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. 
