00:01
So in figure one you have a pyramid, which i'm gonna draw as if you're looking straight at it and only seeing one face.
00:12
So i can do that twice.
00:15
The first one is where my cross section is cut out this way.
00:24
And then the second one is where it's slanted like that.
00:31
So that red piece is what you're cutting out.
00:36
And now when you're looking straight from the front, straight at it, you're gonna have it narrower at the top.
00:43
And then you have the diagonal sides that are going outward and the base is wider.
00:51
So the piece that you're cutting out is shaped like that.
00:59
So that looks like figure b.
01:03
So the answer for part one is b.
01:07
Here's my pen.
01:10
Answer b.
01:15
So that is the shape.
01:17
It's narrow at the top, wider at the bottom, and then the diagonals going inward, just like a pyramid.
01:24
And then in part two, we have a cube that has a cylinder cut out in the center...