This pulley has fixed to one side, and concentric with it, a short frustum of a hollow cone.
At a small distance from the pulley the shaft carries a short frustum of a solid cone accurately turned to fit the hollow cone.
The stand proper rested on a sort of frustum of a cone.
Up the sides were several flights of steps, and at the top of the frustum was standing room for a number of people; but in the stand proper there was room for but one.
At the conclusion of every distinct thought in the above prayer, the company of worshippers at the top of the frustum would cry aloud--"Amen, amen!
The fruit is shaped like the frustum of a pyramid: leaves of a brownish tinge, and drooping at the extremities, with strong prickles, thinly scattered.
Of course, when I was taught how to measure a cone, I was also instructed to do the same with the frustum of one.
This gave the base of the hollow cylinder, which would be equal to the frustum of a cone of like altitude; and another multiplication by the length produced the entire cubic content.
It was built in the form of a frustum of a pyramid, and was fifty-four feet square at the bottom and six feet square at the top.
A very handy engine, consisting of a large wooden male screw turning in a female one, which forms the upper part of a strong wooden box, shaped like the frustum of a pyramid.
A stake or piece of wood formed like the frustum of a cone.
The cylinder was eighty-three feet in length to the water line, the cone nine feet high, the first tower fifty one feet above the frustum of the cone, and the second tower forty feet above this.
The vessel proper was a cylinder; its base, a plane; its top, the frustum of a cone, surmounted by a tower upon a tower.
It should be noticed that the regular pyramid may be considered as a frustum with the upper base zero, and the proposition as a special case under the corollary.
An interesting case for a class to notice is that in which the upper base becomes zero and the frustum becomes a cone, the proposition being still true.
If the upper base is equal to the lower base, the frustum becomes a cylinder, and still the proposition remains true.
This leads to the corollary concerning the lateral area of the frustum of a regular pyramid.
The lateral area of a frustum of a cone of revolution is equal to half the sum of the circumferences of its bases multiplied by the slant height.
It is also possible, if we choose, to let the upper base of the frustum pass through the vertex and cut the lateral edges above that point, although this is too complicated for most pupils.
The expander I first employed consisted of a tapering piece of iron, similar in shape to the frustum of a cone, and this, when inserted into the cavity of the bullet, was flush with the bottom of the cylinder.
The use of the Gomer form of chamber, is nearly universal in brass guns: the shape is the frustum of a cone with a spherical bottom.
The form of the stand is the frustum of a hexagonal pyramid reversed, about six or eight inches in diameter.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "frustum" in a variety of sentences. We hope that you will now be able to make sentences using this word.
