The volume of seeds in the package must be equal to the volume of the feeder in order to fill it completely. The volume of the conic feeder is given by: V(f) = (πr²h)/3 And volume of the cylindrical package is given by: V(p) = πr²h Equating the two and substituting values: (π x 3² x 24)/3 = π x 6² x h h = 2 inches
The term angle of elevation denotes the angle from the horizontal upward to an object. An observer's line of sight would be above the horizontal. The term angle of depression denotes the angle from the horizontal downward to an object. An observer's line of sight would be below the horizontal.