Art. 88. Long Measure is used in measuring lines or distances. It is also called Linear Measure. The denominations are inches, feet, yards, rods, furlongs, and miles. The following denominations are also used: 4 inches are 1 hand, 3 feet are 1 pace. 6 feet are 1 fathom, { used in measuring the depth 3 miles are 1 league, { 60 geographic miles, or, 69 statute miles (nearly), } water. used in measuring distances at sea. are 1 degree at the equator. 360 degrees (°) make the circumference of the earth. 7. How many rods in 2 furlongs? In 5 furlongs? In 8 furlongs? 8. How many furlongs in 80 rods? In 120 rods? 9. How many furlongs in 6 miles? In 9 miles? 10. How many miles in 32 furlongs? In 56 furlongs? In 72 furlongs? 11. How many rods in 66 paces? 12. A ditch is 28 furlongs long: how many miles long is it? 13. A vessel sunk in water 9 fathoms deep: what was the depth of the water in feet? 14. A steamer sails 3 leagues an hour: how many hours will it take it to sail 90 miles? 15. A horse is 15 hands high: what is its height in feet? 16. How many feet in a rod? 17. How many rods in a mile? 18. What part of a foot is 9 inches? WRITTEN EXERCISES. 21. How many feet in 16 yards? How many inches? 22. How many inches in 3 fur. 20 rd. 3 yd.? 23. How many feet in 2 fur. 30 rd. 4 ft.? 24. Reduce 3 mi. 5 fur. 20 rd. to yards. 25. Reduce 1650 rods to miles. 26. Reduce 32274 inches to higher denominations. 27. Reduce 4 mi. 27 rd. 2 ft. 10 in. to inches. 28. How many steps of 2 ft. 6 in. each will a man take in walking 2 miles? 29. How many times will a wheel 6 feet in circumference turn round in going 2 miles? 30. Sound travels 1090 feet a second: how many miles will it travel in 60 seconds? 31. How many rods of fence will inclose a farm which is of a mile long and of a mile wide? perches, roods, acres, and square miles. A Square Yard is a square, each side of which is a yard, or three feet, in length. It contains 9 square feet. NOTE.-The teacher should explain and define a right angle, a square, a rectangle, etc. Table. 3 FEET 3 FEET SQUARE YARD 144 square inches (sq. in.) are 1 square foot, 9 square feet 30 square yards 40 perches. 4 roods 640 acres 3 FEET! sq. ft. 8q. yd. NOTES.-1. Land Surveyors use Gunter's Chain, which is 4 rods or 66 feet long, and consists of 100 links, each link being 79 inches long. A square chain is 16 square rods, and 10 square chains are 1 acre. 2. Glazing and stone-cutting are estimated by the square foot; painting, plastering, paper-hanging, ceiling, and paving, by the square yard; and flooring, roofing, tiling, and bricklaying, by the square of 100 feet. Brick-laying is also estimated by the square yard, and by the 1000 bricks. 1. How many square feet in 5 square yards? In 7 square yards? 2. How many square yards in 36 square feet? In 72 square feet? In 90 square feet? 3. How many perches in 2 roods? In 5 roods? 4. How many roods in 80 perches? In 120 perches ? 5. How many roods in 8 acres? In 12 acres? 6. How many acres in 16 roods? In 40 roods? |
