00:01
Alright, so the question asks how many rectangles are in the figure.
00:06
So looking at this figure, i'm just going to draw a quick sketch of it.
00:18
Okay, so there's how many single squares? well, there's 11.
00:35
Now, how many rectangles can we make with two of these squares? well, let's count.
00:43
There's this might get a little messy one two three four five six and just as much as that going going up and down and i'll show that in blue seven eight nine ten eleven twelve 12 right and that's just the 3 by 3 so that's 12 and then we have 13 here and 14 here okay now then how many of these rectangles do we have so let me start with the 3 by 3 we have we have 1 2 3 going vertical 4 5 6 and then this one, seven, and eight.
02:02
This one being the five by one.
02:05
So that's eight shaped like that.
02:08
Now, what about this? how many two by twos do we have? let me do that one in red.
02:18
So we have one two by two, two, three, four only...