 | Daniel W. Fish - Arithmetic - 1874 - 542 pages
...are commonly estimated in cubic measure. 479. When lumber is not more than 1 inch thick : RULE. — Multiply the length in feet by the width in inches, and divide the product by 12. 480. When more than 1 inch thick : RULE. — Multiply the length in feet by the width and thickness... | |
 | Edward Brooks - Arithmetic - 1874 - 352 pages
...RuLE.;4^. To find the contents of a board, multiply the length in feet by the width in feet, or, Ij. I Multiply the length in feet, by the width in inches, and divide the product by 12. 1. What are the contents of a board 16 feet lone and IJft. wide ? ^£ Cy/ 2. What are the contents... | |
 | John Groesbeck - 1875 - 378 pages
...beams, &c., is measured in even inches, odd inches not being counted. 400. To measure boards. RULE. — Multiply the length in feet by the width in inches, and divide the product by 12 ; the quotient will be the number of square feet. When the board is more or less than 1 inch thick, add or subtract in... | |
 | James Bates Thomson - 1875 - 392 pages
...is i foot long, i foot wide, and i inch thick. A Cubic Foot is 12 board feet. Hence, the RULE. — Multiply the length in feet by the width in inches, and divide the product by 12; the result will be board feet. NOTES. — i. If a board tapers regularly, multiply by the mean width, which... | |
 | Horatio Nelson Robinson - Arithmetic - 1875 - 468 pages
...measure, hewn and round timber in cubic measure. When lumber is not more than 1 inch thick : RULES. 1. Multiply the length in feet by the width in inches, and divide the product by 12. When more than 1 inch thick : 2. Multiply the length in feet by the width and thickness in inches,... | |
 | Horatio Nelson Robinson - Arithmetic - 1875 - 496 pages
...measure, hewn and round timber in cubic measure. When lumber is not more than 1 inch thick : RULES. 1. Multiply the length in feet by the width in inches, and divide the product by 12. When more than 1 inch thick : 2. Multiply the length in feet by the width and thickness in inches,... | |
 | Edward Olney - Arithmetic - 1875 - 338 pages
...15 in. wide ? Suggestion.-We have ** x ^V"" = ttJIJ«-il Why is it that in measuring boards we may multiply the length IN FEET by the width in INCHES, and divide the product by 12 to get the square feet ? 3. How many square feet in a load of boards in which there are 10 boards 12... | |
 | Jerome Bonaparte Washington - United States - 1876 - 970 pages
...decimal place, and the result will be the answer in wine gallons. How to measure boards. JiuLE. — Multiply the length (in feet) by the width (in inches) and divide the product by 12 — the result will be the contents in square feet. ' How to measure scantlings Joists^ planks* J///JT, etc,... | |
 | Emerson Elbridge White - Arithmetic - 1876 - 236 pages
...the diameter. 5. To find the number of square feet in a board not exceeding one inch in thickness, Multiply the length in feet by the width in inches, and divide the product by 12. NOTES. — 1. If the board is 1i inches thick, add J of this surface measure ; if 11 inches thick,... | |
 | James Bates Thomson - 1876 - 400 pages
...foot long, 1 foot wide, and I inch thick. A Cubic Foot is 12 board feet. Hence, the RULE.—Multiply the length in feet by the width in inches, and divide the product by 12; f:-.e result will be board feet. NOTES.—1. If a board tapers regularly, multiply by the mean width,... | |
| |
RULE. — Multiply the length (in feet) by the width (in inches) and divide the product by 12 — the result will be the contents in square feet. 
