 | George Edward Atwood - 1894 - 396 páginas
...separately, find the product of the half sum and the three remainders, and extract its square root. 431. To find the area of a trapezoid. RULE. — Multiply half the sum of the, parallel sides by the altitude. 432. To find the area of a trapezium. RULE. — Multiply the diagonal... | |
 | Joshua Rose - 1899 - 480 páginas
...in Fig. 94. Its altitude or height is the distance between its paralell sides, as E in the figures. To find the area of a trapezoid. Rule. Multiply half the sum of the two paralell sides by the altitude. H 0 D Fig. 94. In an ellipse the line A, Fig. 95, represents the "major,"... | |
 | George Edward Atwood - 1899 - 392 páginas
...separately, find the product of the half sum and the three remainders, and extract its square root. 431. To find the area of a trapezoid. RULE. — Multiply half the sum of the parallel sides by the altitude. 432. To find the area of a trapezium. RULE. — Multiply the diagonal... | |
 | Eugene L. Dubbs - 1901 - 462 páginas
...around B's farm cost $180, what should have been the cost of that around A's, at the same rate ? 225. To find the area of a trapezoid. RULE. Multiply half the sum of the parallel sides by the altitude. 1. A floor is 25 ft. long, and its two ends are respectively 16 ft.... | |
 | Nehemiah Hawkins - 1901 - 354 páginas
...To find the area of a Trapezoid. NOTE. A Trapezoid is a trapezium having two of its sides parallel. RULE. Multiply half the sum of the two parallel sides by the perpendicular distance between them. k Fig. 38. Let the figure be the trapezoid, the sides 7 and 5... | |
 | Joseph Ray - 1903 - 366 páginas
...25£ yd. 13. A rectangular field is 15 rd. long. What must be its width to contain 1 A. ? 10J rd. 248. To find the area of a trapezoid: Rule. — Multiply half the sum of the parallel sides by the altitude. EXPLANATION. — The base of a parallelogram having the same altitude... | |
 | Nehemiah Hawkins - 1903 - 362 páginas
...Fig- 7TO FIND THE AREA OF A TRAPEZOID. A Trapezoid is a trapezium having two of its sides parallel. RULE. — Multiply half the sum of the two parallel sides by the perpendicular distance between them. 62 USEFUL MEASUREMENTS. Let the figure be the trapezoid, the sides... | |
 | Joseph Gregory Horner - 1906 - 572 páginas
...area may be found by the above rule for trapeziums, but generally it is calculated by the following rule: — Multiply half the sum of the two parallel sides by the perpendicular distance between them. AREA OF THE CIRCLE. — The area of the circle may be found by... | |
 | 1906 - 576 páginas
...area may be found by the above rule for trapeziums, but generally it is calculated by the following rule: — Multiply half the sum of the two parallel sides by the perpendicular distance between them. AREA OF THE CIRCLE. — The area of the circle may be found by... | |
 | Charles Lingle Woodfield - 1917 - 154 páginas
...Surfaces I. To find the area of a square or a rectangle: Rule.— Multiply the length by the width. IL To find the area of a trapezoid: Rule. — Multiply half the sum of the parallel sides by the altitude. III. To find the area of a triangle: Rule. — Multiply the base by... | |
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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. 
