 | Edward Thomas Stevens - 1866 - 434 páginas
...which has only two of its opposite sides parallel, as ABD c. AE is the perpendicular. c K u To Jind the area of a trapezoid. RULE : — Multiply half the sum of the parallel sides by tho perpendicular distance between them ; the product is the area. DD THE CIRCLE.... | |
 | Gerardus Beekman Docharty - 1867 - 474 páginas
...and 25.69 chains respectively, to find the area. Ans. 61 acres, 2 roods nearly. PROBLEM VI. Tojind the area of a trapezoid. RULE. Multiply half the sum...two parallel sides by the altitude of the trapezoid. (Geom., BI, th. 29.) Or, Multiply the altitude by the distance between the middle points of its inclined... | |
 | Charles Davies - 1867 - 354 páginas
...AB, DC, parallel. The perpendicular CE is called the altitude. 322. To find the area of a trapezoid. Multiply half the sum of the two parallel sides by the altitude, and the product will be the area. (Bk. IV. Prop. VII.) EXAMPLES. 1 . Required the area of the trapezoid... | |
 | James Stewart Eaton - 1873 - 340 páginas
...upon it, from the other angles of the trapezium, 6 and 8 inches ? Ans. 140 sq. in. 389. PROBLEM 3. To find the area of a trapezoid : RULE. Multiply half the sum of the parallel sides by the altitude, and the product will be the area. 387. What it a Quadrilateral ? How... | |
 | Philotus Dean - 1874 - 472 páginas
...rd. 4. What is the area of a triangle whose sides are, respectively, 18, 20, and 24 inches? Art. 473. To find the area of a trapezoid. Rule. — Multiply half the sum of the parallel sides by the altitude. Í. How many square feet in a board 18 ft. long, 18 in. wide at one... | |
 | James Stewart Eaton - 1876 - 366 páginas
...upon it, from the other anglea of the trapezium, 6 and 8 inches ? Ans. 140 sq. in. 389. PKOBLEM 3. To find the area of a trapezoid : RULE. Multiply half the sum of the parallel sides by the altitude, and the product will be the area. 387. What is a Quadrilateral ? How... | |
 | Samuel Mecutchen, George Mornton Sayre - 1877 - 200 páginas
...5. The base of a rhomboid is 375 ft. 6 in., and the perpendicular height 40 yards; what is its area? To find the area of a trapezoid. RULE. Multiply half the sum of the parallel sides by the altitude. 1. What is the number of square feet in a trapezoid, one of the parallel... | |
 | Joseph Ray - 1880 - 420 páginas
...II. To find the area of a triangle. Rule.— Take half the product of the base by the altitude. III. To find the area of a trapezoid. Rule. — Multiply half the sum of the parallel sides by the altitude. NOTE. — The following is demonstrated in Geometry : IV. To find the... | |
 | William Dodds - 1883 - 198 páginas
...area of a trapezoid when the parallel 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... | |
 | M. P. Caldwell - 1883 - 198 páginas
...garden whose area is J an acre; it is 110 yards long; how wide is it? Ans. 22 yds. PROPOSITION 5.— To find the area of a trapezoid. RULE. — Multiply half the sum of the parallel sides by the altitude, and the product is the area. Or, place the altitude and half the sum... | |
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To find the Area of a Trapezoid. RULE. Multiply half the Sum of the two parallel Sides by the perpendicular distance between them, or the sum of the two parallel Sides by half the perpendicular distance ; the Product will be the Area. 
