Wa'al, jest cut off the top, and what's left will be the frustum.
Then follows, in most textbooks, a theorem relating to the volume of a frustum.
The top of the piston forms the frustum of the cone and the pistons are 110 mm.
A stick of timber is in the shape of the frustum of a square pyramid, the lower base being 22 in.
This leads to the corollary concerning the lateral area of the frustum of a regular pyramid.
If the upper base is equal to the lower base, the frustum becomes a cylinder, and still the proposition remains true.
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 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.
It is 56 feet high from the rock to the platform or balcony floor, and its shape is the frustum of a cone.
The solids divided in given ratios are the sphere, the pyramid, the cone and a frustum thereof.
1650s, from Latin frustum "piece broken off," from PIE *bhrus-to-, from root *bhreu- "to cut, break up."