The circumference of a circle is given by C = 2*pi*r, so if the great circle has C = 22*pi, r = (22*pi)/(2*pi) = 11 Thus, the radius of both the circle and sphere is 11. Since the surface area of a sphere is given by A = 4*pi*r^2, the surface area of this sphere will be 4*pi*(11)^2 = 4*pi*121 = 484*pi
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45 degrees. A right triangle is 90 degrees so 90-45=45.
