What fraction of a full turn is 1 degree

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Solving algebraic equations 2m+3=11

Which rectangle if translated 6 units right and 16 units down and the rotated 90° clockwise about the point (4, -11) will result in rectangle e?