§ 87. This is used to measure surface, or any thing in which length and breadth are both considered. The denominations are SQUARE Inc:-1, SquARu F001’, SQUARE Yuan, SquARr: Ron or P1-men, Roon, Acne, and Squann MILE. 1 inch § 88. A square is the space included by four equal lines, drawn perpendicular to each other, or so that the 1 square four angles are equal to each other; if each side of the inch square is 1 inch the figure is called a square inch. 8 feet If each side of the square be one yard, (three feet,) the figure .is called a square yard. It 2 will be seen that one square yard or 3 feet ii square contains 9 square feet. _ — The number of small squares contained in any square figure, is always equal to the number of units in one side of the square figure multiplied by itself; thus in a square figure each side of which is 8 inches, there are 64 square inches; and in 1 foot square or 12 inches each way, there are 12 X 12 = M4 square inches. 3 inches square § 89. When we say 3 inches square, we mean a square figure, each side of which is 3 inches; but when we say 3 square inches, we mean 3 small squares, each an inch long, and an inch wide ; 3 inches square contains 9 square inches. — "_' The difference between 4 inches square and 4 3 square inches' square inches, is 12 square inches; the diflerence between 6 miles square and 6 square miles, is 30 square miles. TABLE. 144 square inches - - make 1 sq. foot - - - marked sq. ft. 9 square feet - - - “ 1 sq. yard - - “ sq. yd. 30.1. square yards - - “ I perch - - - “ P. 40 perches - - - - “ 1 rood - - - - “ R. 4 roods - - - - - “ 1 acre - - - - “ A. 646 acres - - - -, - “ 1 sq. mile - - “ sq. M. Land is measured with a Surveyor’s or Gunter’s chain; it is 4 rods or 66 feet in length, and is divided into '100 links. § 90. This is used in measuring things that have length, breadth and thickness; such as, Wood and Stone. . The denominations are SOLID Inca, Somn F001’, $01.11) Yum, Conn and Tozv. foot thick on this base would contain 9 solid feet, and 3 feet thick would contain 27 solid feet: in the same way it may be shown that 1 solid foot contains 12 X 12 X 12 = 1728 solid inches. The number of small cubes contained in any large cube is always equalto the length, breadth and thickness multiplied together. TABLE. 1728 solid inches - make 1 solid foot - marked s. ft. 27 solid feet - - “ 1 solid yard - “ s. yd. .7V'ote. A cord foot is one foot in length of the pile which makes a cord, that is, 4 feet wide 4 feet high, and 1 foot in length; it contains 16 solid feet, and 8 cord feet make 1 cord. 3. Reduce 28 cords of wood to solid fleet. - ./Ins. 3584. 4. Reduce 34 cords of wood to cord feet. - Aux. 272. 5. Reduce 1 cord of wood to solid inches. - fins. 221184. 6. Reduce 63936 s. in. to s. yd. - - fi11a. 1 s. yd. 10 ll. 7. Reduce 131328 solid inches to s. ft. - - ./Ins. 76. 8. Reduce 1529280 solid inches, to tens of round timber. ./Ins. 22 tons 5 5. feet. 9. Reduce 87482 cord feet to cords. ./Ins. 10935 .c0rds 2 cord feet. 10. Reduce 884736 solid inches to cords. - ./Ina. 4. CLOTH MEASURE. § 92. This is used in measuring cloth, muslin, tape, &c. TABLE. 4 nails (na.) - make 1 Quarter - marked qr. 4- Quarters - “ 1 Yard - - “ , yd. 3 Quarters - “ 1 Ell Flemish “ E. F|. 5 Quarters - “ 1 Ell English - -“ E. En. 6 Quarters - “ 1 Ell French - “, E. Fr. Note. Since there are 36 inches in one yard, it is evident that there are 9 inches in a quarter, and 2% inches in a nail. -- Here we reduce the yards to quarters, and then 3)24 = qrs. reduce the quarters to Ells Flemish. |