Question

what is the frustum of cone?
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Answer 1

Answer:

In geometry, a frustum is the portion of a solid that lies between one or two parallel planes cutting it. A right frustum is a parallel truncation of a right pyramid or right cone. In computer graphics, the viewing frustum is the three-dimensional region which is visible on the screen.

Answer 2

Answer:

Frustum of cone is the part of cone when it is cut by a plane into two parts. The upper part of cone remains same in shape but the bottom part makes a frustum. Both pieces have different volumes and areas.

Volume of frustum V = 1/3 π(r²h − r′²h′)    

Total surface area of frustum of cone = πL (r + r′) + πr² + πr'²

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