 | Richard Nelson - Arithmetic - 1867 - 304 pages
...multiply hy the perpendicular drawn from the center of the polygon to the middle of one of its sides; or, Multiply the square of the side of the polygon by the» number standing opposite to the number of its sides in the following table : 14. The side of a pentagon (a five-sided figure) is... | |
 | Sir Rowland Macdonald Stephenson - Railroads - 1869 - 446 pages
...the perpendicular from its centre to one of its sides, and the product will be the area. UULE II. — Multiply the square of the side of the polygon by the number opposite its name, in the column headed "Areas," in the following table, and the product will be the... | |
 | Thomas Hunter - Geometry, Plane - 1878 - 142 pages
...when a side only is given. RULE.—Multiply the square of the side by the number standing opporitt to its name in the following table, and the product will be the area.* 1. Find the area of a regular pentagon whose side is 25 feet. 25"=625. The tabular area is 1.720477.... | |
 | Benjamin Franklin Finkel - Mathematics - 1888 - 518 pages
...1356.6. Prob. XVII. To find the area of a regular poiygron. when the side only is griven. *Bule. — Multiply the square of the side of the -polygon by...standing opposite to its name in the following table of areas of regular polygons whose side zi 1 .• * Demonstration. — Since a regular polygon can... | |
 | William Miller Barr - Engineering - 1918 - 650 pages
...being multiplied by the number of sides must give the area of the whole figure. To Find the Area of a Regular Polygon When the Side Only Is Given. — Rule:...side of the polygon by the number standing opposite its name in the following table and the product will be the area. NOTE. — The multipliers in the... | |
 | Steam engineering - 1905 - 572 pages
...errors in the future." EASY LESSONS IN MENSURATION. DB DIXON. II. Problem 8. To find the area of a regular polygon when the side only is given. Rule....following table, and the product will be the area. No. of Sides. Names. 3 Trigon or equil. triangle 4 Tetragon or square. 5 Pentagon. 6 Hexagon. Heptagon.... | |
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Multiply the square of the side of the polygon by the number standing opposite to its name in the following table, and the product will be the area. 
