 | Alexander Wynter Blyth - 1890 - 762 pages
...there are not infrequently rooms in ornamental towers, which may be treated as frustums. The rule is to the sum of the areas of the two ends, add four times the area of the middle or mean section parallel to the ends, multiply this sum by the height, and one-sixth will... | |
 | Frank Eugene Kidder - Architecture - 1892 - 1032 pages
...is a solid having parallel ends or bases dissimilar in shape with quadrilateral sides. RULK. — To the sum of the areas of the two ends add four times the area of the middle section parallel to them, and TO multiply this sum by one-sixth of the perpendicular height.... | |
 | William James Milne - Arithmetic - 1892 - 440 pages
...frustum, its lower base, and a mean proportional between the two bases. Hence the following rule : RULE. — To the sum of the areas of the two ends add the square root of the product of these areas, and multiply the result by one third of the altitude.... | |
 | Alfred John Pearce - 1897 - 202 pages
...— — x volume of FEDC j. jt 1 X 2 X 3 ~ 3 l * .; Volume of frustum = - /S, + V SJ$T + S2| o I / RULE. — To the sum of the areas of the two ends add the square root of the product of the areas of the two ends, and then multiply the result by one-third... | |
 | Frederick Thomas Hodgson - Architecture, Domestic - 1904 - 370 pages
...Rule. — To the sum of the areas of the two ends, abc, def, add four times the area of a section, gh, parallel to and equally distant from the parallel ends, and this sum, multiplied by £ of the height, will give the solidity. Example. — What is the solidity of a rectangular prismoid,... | |
 | Jacob Henry Minick, Clement Carrington Gaines - Business mathematics - 1904 - 412 pages
...are the lower base, the upper base, and a mean proportional between the bases of the frustum. Hence, RULE. — To the sum of the areas of the two ends add the square root of their product, and multiply this sum by one-third, of the • altitude. EXAMPLES.... | |
 | Lumber trade - 1906 - 566 pages
...kinds of odd shaped pieces, as will be noted: The usual rule for figuring pieces of this shape IB: To the sum of the areas of the two ends add four times the area of the middle section, parallel to them, and multiply this sum by one-sixth of the bight. 1 suggest to... | |
 | Lumber trade - 1906 - 556 pages
...kinds of odd shaped pieces, as will be noted: The usual rule for figuring pieces of this shape is : To the sum of the areas of the two ends add four times the area of the middle section, parallel to them, and multiply this sum by one-sixth of the hight. 1 suggest to... | |
 | Frank Eugene Kidder - Architecture - 1908 - 1784 pages
...— A prismoid is a solid having parallel ends or bases dissimilar in shape with quadrilateral sides. RULE. — To the sum of the areas of the two ends add four times the area of the middle sevtion parallel to them, and"1 multiply this sum by one-sixth of the perpendicular height.... | |
 | Clement Mackrow - Naval architecture - 1916 - 766 pages
...slant height. 3. To find the volume and slant surface of the frustum of a cone or pyramid. (Fig. 74.) RULE. — To the sum of the areas of the two ends add the square root of their product ; this final sum being multU plied by J of the perpendicular height... | |
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RULE.* To the sum of the areas of the two ends add four times the area of a section parallel to and equally distant from both ends, and this last sum multiplied by £ of the height will give the solidity. 
