 | Alfred Hiley - 1879 - 228 pages
...of the parallel sides by the perpendicular distance between them, and divide the product by 2. Or, multiply half the sum of the parallel sides by the perpendicular distance between them. •Note 1. — To find the sum of the parallel sides, when the area and the perpendicular distance... | |
 | Clement Mackrow - 1879 - 552 pages
...perpendicular height, then A = ab. 2. Tofindtlie area of a trapezoid. (Fig. 68.) RULE. — Multiply the sum of the parallel sides \ by the perpendicular distance between them ; half j. the product will be the area. Thus if A = the ; area, J and a = the parallel si des, and... | |
 | William Mitchell Gillespie - Surveying - 1880 - 540 pages
...figm«s, tiro opposite sides of which are parallel. The content of a Trapezoid equals half the product of the sum of the parallel sides by the perpendicular distance between them. If the given quantities are the four sides a, b, c, d, of which 4 and d are parallel ; then, making... | |
 | T. W. Stone - Hydraulics - 1881 - 126 pages
...the right-angled parallelogram. Multiply one side, the larger, by the less. The trapezoid. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product is the area. The triangle. Multiply the base by the perpendicular, and half the product... | |
 | Arithmetic - 1882 - 526 pages
...the perpendicular distance betwcen the sides. V. To find the area of a trapezoid :— Multiply one half the sum of the parallel sides by the perpendicular distance between them.^ PROBLEMS. 1. In a farm 225 rods long and 145 rods wide are how many acres ? #. How many yards of carpeting... | |
 | Arithmetic - 1882 - 392 pages
...the perpendicular distance between the sides. V. To find the area of a trapezoid :— Multiply one half the sum of the parallel sides by the perpendicular distance between tliem. PROBLEMS. 1. In a farm 225 rods long and 145 rods wide are how many acres? 2. How many yards... | |
 | William Dodds - 1883 - 198 pages
...sides and the perpendicular distance between them are given. RULE. Multiply half the sum of the two parallel sides by the perpendicular distance between them, and the product will be the area. If two straight "iT lines are of unequal ! / length, the average or mean length of the two is found... | |
 | Education - 1885 - 630 pages
...Question. I. State and prove the rule for finding the area of a trapezoid. Multiply half the sum of the two parallel sides by the perpendicular distance between them, and the product will give the area. sides. The area of ABCDs=$ AB and CD x perpendicular distance BG between them. H Bisect... | |
 | Lumber - 1886 - 170 pages
...of acres in a quadrilateral, having two opposite sides parallel, (such is Fig. 2)— Multiply halt the sum of the parallel sides by the perpendicular distance between them, in rods, and divide the product by 160. EXAMPLE: Given a piece of land ABCE, (Fig. 2) with the side... | |
 | Henry Hall - Linotype - 1887 - 520 pages
...the area, multiply the length by the perpon. i H- . 1 1 1 r height. TRA.PEZOID.— To find the area, multiply half the sum of the parallel sides by the perpendicular distance between them. TRIANGLE.— To find tile area, multiply the base by one-halt the perpendicular height. TRAPEZIUM.—... | |
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Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. 
