The stability of a slope is to be analyzed by the method of slices. On a particular trial curved surface through the soil mass, the shearing and normal components of each slice's weight are tabluated...

The stability of a slope is to be analyzed by the method of slices. On a particular trial curved surface through the soil mass, the shearing and normal components of each slice's weight are tabluated as shown below. The lenght of the trial curved surface is 25 feet. The cohesion,
c
is 173 #/ft²
and the angle of friction, f = 19 degrees. Determine the Factor of Safety,
FS_s

for the values given?

The stability of a slope is to be analyzed by the method of slices. On a particular trial curved surface through the soil mass, the shearing and normal components of each slice's weight are tabluated as shown below. The lenght of the trial curved surface is 36 feet. The cohesion,
c
is 172 #/ft²
and the angle of friction, f = 15 degrees. Determine the Factor of Safety,
FS_s

for the values given?

(BASED ON THE OPTIONS LISTED ABOVE, WHAT ARE THE CORRECT ANSWERS?)