MJ:
As the clips read...there are many assumptions...no knowledge of where 4-1/2 came from...an added feature of a square that doesn't exist that's attached to two completely different angled triangles...of which one is tagged as the trapezoid.
All from a simple triangle with basic numbers set within.
Talk about unsimplified...it couldn't get worse...!
Thanks for the clips though...I find some to be amusing.
On a serious note:
The author of this problem knew the pi value for sure and he wanted all who viewed his work to see the three values that the AE used for spherical measure.
As you and I have stated in the past...the value of pi was as significant as the number 4 representing a square...it was common knowledge to all and for some it was not important to note.
Fortunately for us...this fellow did !
Look for the formula for volume.
Best.
Clive