Arithmetic by grades for inductive teaching, drilling and testing Volume 8 - Softcover

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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1894 Excerpt: ...lead balls.015m in diameter can be made from 50Kgof lead, specific gravity of lead being 11.4? 11. A cube and a sphere have the same surface; viz., 2400 sq. in. What is the difference in cubic contents? 12. An iron ball.072m in diameter weighs 1.8Kg. How heavy is a ball of the same material 1.08m in diameter? 13. What is the volume of a cylinder whose surface is 84 qm and whose height and diameter are as 1: 2? Practical Measurements. (For suggestions as to common practice in measurements, see Appendix.) 1. How many feet of lumber are there in a board (a) 18 ft. long, 8 in. wide, and 1 in. thick? (b) 16 ft. long, 9 in. wide, and J in. thick? (c) 12 ft. 8 in. long, 8£ in. wide, and 1 in. thick? (d) 15 ft. 3 in. long, 10 in. wide at one end, 7 in. wide at the other, and in. thick? 2. How many feet of lumber or board feet are there in a plank (a) 10 feet long, 8 in. wide, and 2 in. thick? (b) 14 ft. 2 in. long, 7 in. wide, and 1£ in. thick? (c) 15 ft. 9 in. long, 9£ in. wide, and 2£ in. thick? 3. Find the cost of 1860 ft. of lumber at $22.50 per M. 4. How many feet of lumber will it take to make a sidewalk 126 yd. long, 8 ft. 6 in. wide, if the planks used are 1 in. thick? (No allowance for waste.) 5. At $18 per thousand, find the total cost of 30 three-by-six joists 18 ft. long; 68 6-inch boards 10 ft. long, f-in. thick; 24 three-by-four scantlings 15 ft. long. 6. A room 18' X 10' 6" X 9' has three windows, each 6£' X 3£', and two doors, each 7£' X 4'. How many bundles of laths will it take for the walls and ceiling? Cost of lathing the room at 4/ a square yard? 7. How many bundles of shingles will it take to shingle a double roof 32 ft. 8 in. long, rafters 22 ft. long, shingles to be laid 4 in. to the weather? 8. A hous...

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