 | Frank Russell Firth - 1880 - 536 pages
...content of a prismoid may be exactly calculated by means of the Prismoidal Formula, which is (348) 8 = cubic yards, I = length in feet, A, A = the areas...end sections; from which therefore the area of the mid-section may be computed. The labor of calculating the middle area may be avoided in many instances... | |
 | William Henry Searles, Howard Chapin Ives - Railroad engineering - 1919 - 726 pages
...+ A') (343) where Af = the area of a section midway between the ends, and the others are as before. This area is not a mean of the other two, but the...mid-section are means of the corresponding dimensions of the end sections; from which, therefore, the area of the mid-section may be computed. Computation... | |
 | Frank Edwin Barnes - Building - 1924 - 858 pages
...the larger base, b the area of the smaller base, and B' the area of section midway between the two ends. This area is not a mean of the other two, but...the linear dimensions of the midsection are means of corresponding dimensions severally of the end section, from which therefore the area of the midsection... | |
 | William Henry Searles - Railroad engineering - 1925 - 756 pages
...yds.) (284) where M = the area of a section midway between the ends, and the others are as before. This area is not a mean of the other two, but the linear dimensions of the mid-section are from which, therefore, the area of the mid-section may be computed. Computation of volumes. The labor... | |
 | Frank Edwin Barnes - Building - 1927 - 622 pages
...the larger base, ft the area of the smaller base, and B' the area of section midway between the two ends. This area is not a mean of the other two, but...the linear dimensions of the midsection are means of corresponding dimensions severally of the end section, from which therefore the area of the midsection... | |
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A' = the areas at the two parallel ends, and M = the area of a section midway between the ends. This area is not a mean of the other two, but the linear dimensions of the mid-section are means of the corresponding dimensions severally of the end sections;... 