How To Find The Volume Of A Frustum

This video explains how to find the volume of a frustum and explains what a frustum is. We also explain how to find the radius of the smaller/removed cone. There are two practice questions at the end of the video. (This is an updated, 4K version of our previous video with updated audio)
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00:00 Introduction
00:22 What is a frustum
00:47 How to find the volume of a frustum: example question
03:24 Volume of a frustum: practice question 1
04:24 Volume of a frustum: practice question 2
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[@SharifKhan-sl8zq]

Wow, well explained. Just saw it so clicked on it, even tho was looking at probability:tree diagrams...