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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.
Robinson's New Practical Arithmetic for Common Schools and Academies - Page 171
by Horatio Nelson Robinson - 1892 - 416 pages

## Junior High School Mathematics, Volume 1

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...

## The New Stone-Millis Arithmetics

John Charles Stone, James Franklin Millis - Arithmetic - 1920 - 344 pages
...square yard. 3. Learn thoroughly the following : Table of 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....

## Modern Junior Mathematics, Book 1

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....

## Junior High School Mathematics, Volume 3

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...

## Arithmetic, Parts 7-8

Eugene Herz, Mary G. Brants - Arithmetic - 1920 - 344 pages
...= 1 fathom (used in measuring the depth of water) Square Measure 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 (sq....

## The Anderson Arithmetic, Book 3

Robert Franklin Anderson - Arithmetic - 1921 - 348 pages
...3 geographic miles, used to measure distances'at sea. Square Measure 144 square incbfes (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) =- 1 square rod (sq. rd.) = 1 acre (A.) = 1 square mile (sq. mi.) 1 A. = 4840 sq. yd. = 43,560 sq....

## Arithmetical Essentials, Book 2

J. Andrew Drushel, Margaret Eleanor Noonan, John William Withers - Arithmetic - 1921 - 330 pages
...square feet per child does your playground allow? Learn these facts. 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet =1 square yard (sq. yd.) 141 Imi. 1. This square represents one square mile or 640 acres of land. Such an area is called a section...

## Junior High School Mathematics: Book One, Volume 1

Walter Wilson Hart - 1921 - 250 pages
...inches each. 80 chains = 1 mile. Measures of Surface or Square Measure 144 square inches (sq. in.) = : 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 80J square yards = 1 square rod (sq. rd.) 160 square rods 1 , , . . 43560 square feet } = l aCTe (A°...

Helen J. Kiggen - Business mathematics - 1922 - 424 pages
...MEASURE Square measure is used to measure the area of surfaces. TABLE 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 30 j square yd. = 1 square rod (sq. rd.) 160 square rods =1 acre (A.) 640 acres = 1 square mile (sq. mi.)...

## Junior High School Mathematics, Book 2

Walter Wilson Hart - Mathematics - 1922 - 318 pages
...inches each. 80 chains = 1 mile. Measures of Surface or Square Measure 144 square inches (sq. in.) = 1 square foot (sq. ft.) 9 square feet = 1 square yard (sq. yd.) 80^- square yards - =1 square rod (sq. rd.) 160 square rods 1 ... 43560 square feet / " acre ( ' 640...