 | Hall V. Williams - Tinsmithing - 1917 - 382 pages
...perpendicular height of the triangle. To Find the Area of a Triangle When the Base and Perpendicular are Given. Rule: Multiply the base by the perpendicular height and half the product is the area. Example: The base of the triangle is 3 feet 6 inches in length and the height 1 foot 9... | |
 | William Miller Barr - Engineering - 1918 - 650 pages
...into the breadth measured perpendicularly, or, as it is commonly stated, — Area = base X altitude. To Find the Area of a Triangle. — Rule: Multiply the base by the perpendicular height and take half the product. Or, multiply half the product of two contiguous sides by the natural sine of... | |
 | Hall V. Williams - Tinsmithing - 1920 - 378 pages
...perpendicular height of the triangle. To Find the Area of a Triangle When the Base and Perpendicular are Given. Rule : Multiply the base by the perpendicular height and half the product is the area. Example: The base of the triangle is 3 feet 6 inches in length and the height i foot 9... | |
 | Steam engineering - 1905 - 572 pages
...operation— 7 ft. 9 in.= 7.75 ft. And, 3 ft. 6 in.= 3.5 ft. Then, 7.75 X 3-5 —'27.125. PROBLEM. 2. To find the area of a triangle. Rule — Multiply...perpendicular height, and half the product will be the area. Ex. i — What is the area of a triangle whose base AB, Fig. 3, is 18 ft. 4 in. and height С D is... | |
 | Joseph Ray - Arithmetic - 1857 - 340 pages
...square, what cost a roof 40ft. long, the rafters on each side 18ft. 6 in. long? Ans. $5lT80 ART. 313. To FIND THE AREA OF A TRIANGLE. Rule. — Multiply the base by the perpendicular higlit, and lake half the product for the area. Or, when the sides are given, the following RULE :... | |
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To find the Area of a Triangle. Rule ] . Multiply the base by the perpendicular height, and half the product will be the area. 
