Answer:
Its 9 1/16
Explanation:
I guessed and got it right. I just knew it wasn't 9 and the two 16 answers didn't make sense, lol. In the future I think just go with the one closest (but not exact) to the shown thingy, not sure tho?
Update:
Im silly. Solve it like this:
AE*EB=CEtimesED
so 9 which is 4.5*2 would be 4.5*4.5
thats 20.25
20.25/4(the radius)
is 5.06.
That plus 4 is the diameter, lol.
so it rounds to 9 1/16