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Cylinders
A cylinder is a three-dimensional solid shape with two parallel and congruent circular bases, joined by a curved surface at a fixed distance. A cylinder has an infinite curvilinear surface.
Cones
A cone is a three-dimensional solid shape having a flat base and a pointed edge at the top. The flat base of the cone tapers smoothly to form the pointed edge known as the apex. The flat base of the cone can either be circular or elliptical. A cone is drawn by joining the apex to all points on the base, using segments, lines, or half-lines, provided that the apex and the base both are in different planes.
A frustum of a regular triangular pyramid is inscribed in a frustum of a cone whose height and slant height are 12 and 13 respectively. Find the volume of the frustum of the pyramid if the volume and total area of the frustum of the cone are 388? and 216?, respectively. Draw the frustums.
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