| 单词 | prismoidal formula |
| 释义 | > as lemmasprismoidal formula prismoidal formula n. Mathematics a formula for calculating the volume of a prismoid or truncated pyramid, and hence that of a body or excavation regarded as composed of a number of prismoids. ΚΠ 1847 Times 22 Jan. 7/6 The prismoidal formula..for ascertaining the cubical contents of bodies of a prismoidal figure. 1853 J. C. Trautwine New Method of Calculating Cubic Contents of Excavations & Embankments 1 There is but one correct principle upon which to calculate the cubic contents of excavations and embankments; and that is, by means of what is known as the Prismoidal Formula. 1911 Encycl. Brit. XVIII. 138/1 The volume of the prismoid is 1/ 6h (A + 4C + B). This is known as the prismoidal formula. 1991 College Mathemat. Jrnl. 22 320 The reader can also derive formula (1) by making the appropriate substitutions in the ‘prismoidal formula’. < as lemmas |
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