 | Oliver Byrne - Engineering - 1852 - 600 pages
...a trapezoid, or a quadrangle, two of whose opposite sides are parallel- — Multiply the sum of the parallel sides by, the perpendicular distance between them, and half the product will be the areaRequired the area of the trapezoid ABCD, whose sides AB and DC are 321-51 and 214-24, and perpendicular... | |
 | Septimus Norris - Locomotives - 1852 - 356 pages
...the Area of a Trapezoid, fig- 9RULE 1- — Multiply the sum of the two parallel sides, ab, dc, by ap, the perpendicular distance between them, and half the product will be the areaRULE 2- — Draw a diagonal, ac, to divide the trapezoid into two triangles ; find the areas of... | |
 | Anthony Nesbit - Measurement - 1859 - 494 pages
...? Ans. 1131 ft. 2 in. 9 pa. PROBLEM To find the area of a trapezoid. RULE. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. Or, half the sum of the sides multiplied by their distance will give the area. EXAMPLES. 1 . What is... | |
 | Alfred Newsom Niblett - 1861 - 204 pages
...NB—In this figure the dotted lino shows the perpendicular height. RULES. Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. Or, half the sum of the sides multiplied by their distance will give the area. PEOBLEM 5. To find the... | |
 | Oliver Byrne - Engineering - 1863 - 600 pages
...a trapezoid, or a quadrangle, two of whose opposite sides are parallel. — Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. Required the area of the trapezoid ABCD, whose sides AB and DC are 321-51 and 214-24, and perpendicular... | |
 | Isaac Todhunter - Measurement - 1869 - 312 pages
...and CD. Thus we obtain the rule which will now be given. 161. To find the area of a trapezoid. RULE. Multiply the sum of the two parallel sides by the...between them, and half the product will be the area. 162. Examples : (1) The two parallel sides of a trapezoid are 2 feet 6 inches, and 3 feet 4 inches... | |
 | Mechanical engineering - 1874 - 1186 pages
...juid divided by 2, will be the area of the trapezium. To find the area of a trapezoid. — RULE 1. — Multiply the sum of the two parallel sides by the...between them, and half the product will be the area. RULE 2. — Draw a diagonal, to divide the trapezoid into two triangles ; find the areas of those triangles... | |
 | Thomas Hunter - Geometry, Plane - 1878 - 142 pages
...feet. Ans. 222^ yards. PROBLEM VT. To find the area of a trapezoid. RULE.—Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area.* 1. The parallel sides of a trapezoid are 750 and 1225, and the perpendicular distance between them... | |
 | T. W. Stone - Hydraulics - 1881 - 126 pages
...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 is the area.... | |
 | Alexander Wynter Blyth - 1890 - 762 pages
...added to 4,200, = 5,250. The rule for obtaining the area of a trapezoid is: multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. The parallel sides in this instance are ac, ef; the distance between them is half the breadth, 7 feet;... | |
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Multiply the sum of the two parallel sides by the perpendicular distance between them, and half the product will be the area. 
