The area of an square is equal to the square of its side-length. The areas of squares A, B, C, and D, are 4, 9, 25, 49, respectively. What is the side-length of square E?
18
17
13
11
this one's really confusing

Question

The area of an square is equal to the square of its side-length.  The areas of squares A, B, C, and D, are 4, 9, 25, 49, respectively.    What is the side-length of square E?
    18 
   17 
   13 
   11 
this one's really confusing

anonymous · Answer

Alright, here we go:

anonymous · Answer

Can you first tell me how you would find the side length of a square whose area is 25?

anonymous · Answer

Bailey.nae!  I wanna show you that you can answer this yourself.  Just tell me if you know how to find the sides of a square given just the area.

anonymous · Answer

... fine.

square one has a side of 2
square two has a side of 3
square three has a side of 5
square seven has a side of 7.

(You can verify this by doing side squared)

So what's the pattern?
2,3,5,7

Hint:  Who is the leader of the transformers?

The answer is 11.  But WHY?

anonymous · Answer

thank you (:

anonymous · Answer

No problemo!
You know why it's 11, though, right?  Just wanna make sure you know the reasoning.  ^_^