 | Henry Jackson - Arithmetic - 1824 - 172 pages
...inches wide ? , Ans. 1 -J ft. CASE 2d. 1. Q. Hoai do yvu measure a parallelogram or long square 1 A. Multiply the length by the breadth; the product will be the area.* EXAMPLES. 1. A board is 14 ft long-, and loin, wide, how many square feerdoes it contain? 14X 15-T7l2=171... | |
 | William Grier - Mechanical engineering - 1832 - 366 pages
...will be found the square root 12 on D. 42. To find the area of a board or plank : •The rule is, to multiply the length by the breadth, the product will be the area; therefore, by the sliding rule, Set 12 on B against the breadth in inches on A; then 011 the line A... | |
 | Tobias Ostrander - Measurement - 1834 - 182 pages
...each. PROBLEM I. The length and breadth of a, rectangular parallelor gram are given, to find the area. Rule — Multiply the length by the breadth ; the product will be the area. EXAMPLES. 1. The longest side of a rectangular parallelogram is 24 rods, and the shortest 16 — What... | |
 | William Grier - Mechanical engineering - 1836 - 384 pages
...C will be found the square root 12 on D. 42. To find the area of a board or plank : The rule is, to multiply the length by the breadth, the product will be the area; therefore, by the sliding rule, Set 12 on B against the breadth in inches on A ; then on the line A... | |
 | William Grier - Mechanical engineering - 1842 - 320 pages
...C will be found the square root 12 on D. 42. To find the area of a board or plank : The rule is, to multiply the length by the breadth, the product will be the area ; therefore, by the sliding rule, Set 12 on B against the breadth in inches on A ; then on the line... | |
 | Daniel O'Gorman - 1847 - 152 pages
...of earth=l load. PROBLEM. To find the area or superficial content of a board or plank. THIS is THE RULE. Multiply the length by the breadth, the product will be the content. When the board is tapering, add both ends together, and half the sum will be a mean breadth;... | |
 | John Radford Young - Arithmetic - 1852 - 230 pages
...abstract numbers. The direction for finding the surface of a rectangle is briefly expressed by saying, ' ' multiply the length by the breadth, the product will be the area in square feet, &c." The meaning is, that we are to multiply these measures together as if they were... | |
 | Daniel O'Gorman - 1853 - 246 pages
...MEASTTRE 1N FEET AND 1NCHES. PROBLEM 1. To find the area or superficial content of a board or plank. RULE. — Multiply the length by the breadth, the product will be the content. When the board is tapering, add both ends together, and half the sum will be the mean breadth... | |
 | J. R. Young - 1854 - 228 pages
...abstract numbers. The direction for finding the surface of a rectangle is briefly expressed by saying, * - multiply the length by the breadth, the product will be the area in square feet, &c." The meaning is, that we are to multiply these measures together as if they were... | |
 | Daniel O'Gorman - Ready-reckoners - 1856 - 186 pages
...be found the fourth term 108 on A. PROBLEM 4. Superficial measure by the sliding rule. RULE 4. — Multiply the length by the breadth, the product will be the area. BIBECTION. — Set 12 on B against the breadth in inches on A : on the line A will be found the surface... | |
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C will be found 9, the square root on D. For the square root of 144 : Set 1 on C to 10 on D ; then against 144 on C will be found the square root 12 on D. 42. To find the area of a board or plank : The rule is, to multiply the length by the breadth, the... 
