False because you can only use the Pyth. Theorem on right triangles which may not necessarily be ALL similar triangles.
20.6 divided by 9.7 is 2.12371134
300; Since EF is the only segment not included in FHE, just subtract the 60 degrees there from 360 to get the sum of the rest of the circle
360-60 = 300
Hopefully this is right, i'm a little rusty on geometry
