Question 1199925
The length of travel of the chain around the drum is given by L = A*R, where A
is the rotation angle in radians and R is the radius. 
L = 2 ft = 24 inches
24 = A*10/2 -> A = 24/5 radians
Since pi rad = 180 deg, the angle in degrees is:
24/5*(180/pi) = 275.02 deg