Question

What is the value of x?

Answer 1

i assume x is a radius?

Answer 2

use the appropriate values in a pythag setup if need be

Answer 3

yeah x is radius

Answer 4

then you have all the parts need to pythag it out

Answer 5

18.8^2+4.7^2=c^2
353.44+22.09=c^2
=18.20

Answer 6

18.8 is too long; you want half the chord, not all of it

Answer 7

how about 10.5