LESSON CXXXIX. 1. Cubic or Solid Measure is used in measuring solids; as timber, wood, stone, boxes of goods, etc. TABLE. = {46656 cu. in. 27 cu.ft. 1728 Cubic In. (cu. in.)—1 Cubic Ft., cu. ft. 1 cu. yd.= { 27 Cubic Feet =1 Cubic Yd., cu. yd. 2. A Solid has three dimensions-length, breadth, and thickness. 3. The units of cubic measure are cubes. 4. A Cube is a body bounded by six equal squares called faces. 5. The sides of the squares are called the edges of the cube. This drawing represents a cubic inch, each edge of which is 1 inch long. 1 Inch. 1 Inch. 2. A pile of wood 8 feet long, 4 feet wide, and 4 feet high contains 1 cord. 3. One foot in length of such a pile, that is, 1 foot long, 4 feet wide, and 4 feet high, is called 1 cord-foot. 4. A Perch of stone or of masonry is 16 feet long, 11 feet wide, and 1 foot high, and contains 244 cubic feet. LESSON CXLI. 1. How many cubic feet in a piece of timber 1 foot square at the ends and 3 feet long? In 2 such pieces? 2. How many cubic feet in 4 such pieces? 5? 6? 3. How many cubic feet in 1 cubic yard? In 2 cu. yd. ? 4. A cubic yard is a cube each face of which is 1 sq. yd., and each edge 1 yd., or 3 ft., long. This drawing represents a cubic yard, each face being a square yard, containing 9 sq. ft. If a piece, or section, 1 foot thick is cut from one side, it may be divided into 3 times 3 cu. ft., or 9 cu. ft. And since a cubic yard contains 3 such sections, there are 3 times 9 cu. ft., or 27 cu. ft., in a cubic yard. 3 feet. 5. How many cubic feet in a block of marble 1 ft. thick, 3 ft. wide, and 6 ft. long? 2 ft. wide, 2 ft. thick, and 4 ft. long? 6. How many inches in a cubic block whose edges are 3 inches long? Are 4 inches long? 7. How do we find the solidity, or contents, of a cube or of an oblong body? Ans. By multiplying together the three dimensions, or the length, breadth, and thickness. 8. How many cubic feet in a pile of wood 8 ft. long, 4 ft. wide, and 4 ft. high? In a pile 6 ft. long, 5 ft. wide, and 3 feet high? 9. If a stove burn 1 cord-foot of wood in a week, in what time will it burn 1 cord? 2 cords? 3 cords? 1. Capacity signifies extent of room or space. 2. Measures of capacity are divided into two classes; Measures of Liquids and Measures of Dry Substances. 3. Liquid Measure is used in measuring liquids; as spirituous liquors, oil, molasses, milk, water, etc. In some of the New England States the barrel is estimated at 32 gallons; in some States 31 gallons, and in others from 28 to 32. 4. In prescribing and compounding liquid medicines, 60 Minims (m) = 1 Fluidrachm . f3. : 1 Fluidounce . f3. = 1 Pint = 1 Gallon. Cong. 1= m 61440. f3 1024. 0. |