x = -4, so use the first equation, x^2 = -4^2 = -16
x = 4, use 3rd equation, sqrt(x) = sqrt(4) = 2
The two opposite arcs add to the entire circle, 360 degrees, so we must have EFG=360-60=300 degrees.
Answer: C
11183333.3/10^7 = 1.11x10^-7.
Area are all sides multiplied the formula can be found online
