Answer:
50 feet
Explanation:
I guess you know that perimeter is just the length around the whole thing? Just add up all the given lengths of the sides, right?
Is it throwing you that that one length isn't given? Let's work on that then.
See the 11' across the top? That's how wide the shape is, right? (It's probably a scale drawing of a room.)
Okay, now see the 4' leg at the bottom? It's parallel to the 11' side.
So if we extended that line to the right until it was 11' long, how much more would we have to add? 7 feet, right? That's the missing dimension.
Do you see it? If that whole shape is 11' wide, and you know you've sort of "used up" 4' of it with that little rectangle at the bottom (the part that sticks down), then you've essentially taken away 4' from the 11', leaving a piece that's 7' long. I think if you drew it on graph paper you'd see it easily.
So let's do the perimeter now, just in case you're having trouble with that. Let's pretend we're an ant and start at the bottom left corner and walk up: how many feet would we go? 14, right? Then we turn right at the corner and walk 11'. Then down 6, left 7 (the unknown dimension we found), down 8, and finally, left 4 until we're back at our starting point.
That's the concept of "perimeter". Now just "math" it:
14 + 11 + 6 + 7 + 8 + 4 = 50 feet
I hope that helped. A lot of words, but I wanted you to understand it.