A hand book of general instruction for mechanics, containing useful rules and memoranda for practical men (1907)
Smith, Franklin Elijah, 1872- · New York, D. Van Nostrand company · leaf 209
feet Examples for Exercise 1. What is the area of a trapezoid, the longer of thetwo parallel sides being 130 feet, the shorter 100 feet,and the height 80 feet? Ans. 9200 square feet. 2. What is the area of a trapezoid, the longer of thetwo parallel sides being 25 feet, and the shorter 23 feet,and… … Figs. 18. 19. 20 To Fixd the Area of a Trapezium Rule. Divide the trapezium into two triangles, byconnecting its opposite angles, making this line of divisionthe base line of both triangles. Measure the perpendicu-lar height of each triangle from this base line. Thenfind the area of each triangle,…
Mechanics · Arithmetic · Measurement
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