 | John Bonnycastle - Geometry - 1848 - 320 pages
...trapezoid, or a, quadrangle, two of whose opposite aides are jtarallel. RULE.* Multiply the sum of the parallel sides by the perpendicular distance between them, and half the product will be the area. 1. Required the area of the trapezoid ABCD, whose sides AB and DO are 321.51 and 214.24, and perpendicular... | |
 | Zadock Thompson - Arithmetic - 1848 - 184 pages
...is the area ? Ans. 54.299 rods. 307. To fmd the area, of a trapezoid. (65) RULE. — Multiply half the sum of the two parallel sides by the perpendicular distance between them, aftd the product will be the area. 1. One of the two parallel sides of a trapezoid is 7.5 chairs, and... | |
 | J. M. Scribner - Mechanical engineering - 1849 - 286 pages
...i/, 18 and 16 feet? 42x9 = 378 ) _, 42X8=336 ( PROBLEM IV. To find the Area of a Trapecoid. Rule. — Multiply the sum of the two parallel sides by the...between them, and half the product will be the area. Example 1. — Required the area of the trapezoid, abed, having given ab =321-51 feet, rfc=214'24 feet,... | |
 | Almon Ticknor - Measurement - 1849 - 156 pages
...perpendiculars 28 and 40-5 perches? PROBLEM 24.— THE TEAPEZOID. 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. 1. Required the area of the trapezoid ABCD, whose parallel sides DC and AB are 8-22 chains and 12-41... | |
 | Charles Guilford Burnham - 1850 - 350 pages
...What is the area ? Ans. 24 chains. Art. 271, — To find the area of a trapezoid. RULE. Multiply half the sum of the two parallel sides by the perpendicular distance between them : the product will be the area. 1. What is the area of a piece of land that is 30 chains long, 20 chains... | |
 | Oliver Byrne - Engineering - 1851 - 310 pages
...trapezoid, or a quadrangle, two of ivJwse 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... | |
 | 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... | |
 | Joseph Bateman - Excise tax - 1852 - 376 pages
...is a quadrilateral figure having none of its sides parallel. To find the area of a trapezoid.^ — Multiply the sum of the two parallel sides by the perpendicular distance bctween them, and half the product is the area. To find <he area of a trapezium. $ — Draw a diagonal... | |
 | 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... | |
 | Ezra S. Winslow - Business mathematics - 1853 - 264 pages
...15 :: 22 = 83| rods. Ans. ' OF TRAPEZOIDS AND TRAPEZIUMS. To find the area of a trapezoid. RULE. — Multiply the sum of the two parallel sides by the perpendicular distance between them, and divide the product by 2 ; the quotient is the area. EXAMPLE. — The side AB, of the trapezoid AB CD,... | |
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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. 
