Αναζήτηση Εικόνες Χάρτες Play YouTube Ειδήσεις Gmail Drive Περισσότερα »
Είσοδος
Βιβλία Βιβλία
" To find the area of a trapezium. RULE. — Divide the trapezium into two triangles by a diagonal, and then find the areas of these triangles ; their sum will be the area of the trapezium. "
Arithmetic, for use in schools - Σελίδα 144
των John Barter (of the science and art coll, Plymouth.) - 1877
Πλήρης προβολή - Σχετικά με αυτό το βιβλίο

The shipwright's vade-mecum [by D. Steel].

David Steel - 1805
...and three-eighths of an inch, place the comJJ / 2 ,?4 1 G rn i ' i , 1 __ i .- \\ i3 -H ' PROBLEM 5. To find the Area of a Trapezium. RULE. Divide the trapezium into two triangles by a diagonal ; then find the areas of these triangles, by Problem 3, and add them together...

The complete measurer: or, The whole art of measuring, containing the ...

Thomas Keith - 1817
...feet, and the length of a ladder to reach the second flooc window must be 3T5753 feet. PROBLEM VII. To find the Area of a Trapezium. RULE*. Divide the trapezium into two triangles by a diagonal drawn from two of its opposite angles; then find the areas of these triangles,...

A treatise on practical geometry, mensuration, conic sections, gauging, and ...

Ireland commissioners of nat. educ - 1834
...on the 30 foot wall ? Ans. 31-9956 height of waif, and 15-484 the breadth of the house. PROBLEM XL To find the area of a Trapezium. RULE. Divide the trapezium into two triangles, by joining two of its opposite angles ; find the area of each triangle ; and the sum...

A Treatise on Mensuration for the Use of Schools

1837 - 262 σελίδες
...the prop 37-68 feet. PROBLEM XI. To fotd the area of a Trapezium. RULE. Divide the trapezium into two triangles, by joining two of its opposite angles ;...area of each triangle, and the sum of both areas will give the area of the trapezium. Or: Draw two perpendiculars from the opposite angles to the diagonal...

A Treatise on Mensuration for the Use of Schools

Commissioners of National Education in Ireland - 1837 - 262 σελίδες
...greater segment 9*2 186 feet, lesser segment 6-40 18 feet, and length of the prop 37-68 feet. PROBLEM XI. To find the area of a Trapezium. RULE. Divide the trapezium into two triangles, by joining two of its opposite angles ; find the area of each triangle, and the sum...

Introduction to lineal drawing and mensuration

Henry Pickton - 1847 - 48 σελίδες
...required the area of one side. ft. in. Here 80 0 10 5 800 0 33 4 833 4 Ans. 833 feet, 4 inches. Prob. XII. To find the area of a trapezium. Rule. Divide the trapezium into two triangles, find the area of these by Prob. VII., the sum of which is the required area. Prob. XIII....

The American Arithmetic

James Robinson (of Boston.) - 1847
...longest side being 18 feet, its parallel side 16 feet, and its altitude or width 15 feet? Art. 198. To FIND THE AREA OF A TRAPEZIUM. RULE. Divide the trapezium into two triangles by a diagonal line; find the area of each of these triangles ; the sum of their areas...

Scribner's Engineers' and Mechanics' Companion: Comprising United States ...

J. M. Scribner - 1849 - 264 σελίδες
...base, ab ? 53 -45" = 784, and ^^783=28 yds. Ans. 28 yds. OF TRAPEZIUMS AND TRAPEZOIDS. PROBLEM III. To find the Area of a Trapezium. Rule. — Divide the trapezium into triangles by drawing diagonals ; and the sum of the areas of these triangles will be the area of the trapezium....

Introduction to The National Arithmetic: On the Inductive System Combining ...

Benjamin Greenleaf - 1849 - 324 σελίδες
...parallel. A diagonal is a line joining any two -opposite angles of a quadrilateral; as, E F. ART. 331. To find the area of a trapezium. RULE. — Divide the trapezium into two triangles by a diagonal, and tlifn find the areas of these triangles ; their sum will be the area...

Introduction to the National Arithmetic ...

Benjamin Greenleaf - 1851
...parallel. A diagonal is a line joining any two opposite angles of a quadrilateral; as, E F. ART. 331. To find the area of a trapezium. RULE. — Divide the trapezium into two triangles by a diagonal, and then find the areas of these triangles ; their sum will be the area...




  1. Η βιβλιοθήκη μου
  2. Βοήθεια
  3. Σύνθετη Αναζήτηση Βιβλίων
  4. Λήψη PDF