Hemisphere is the exact half of a sphere. When a plane cuts across a sphere at its center, it forms two hemispheres. Surface area of a hemisphere of radius r is given by 2pr2. Volume of a hemisphere of radius r is given by 2/3pr3.
Falling dreams also often reflect a sense of failure or inferiority in some circumstance or situation. It may be the fear of failing in your job/school, loss of status, or failure in love. You feel shameful and a lost sense of self-esteem You are unable to keep up with the status quo and feel that you don't measure up.
Ladder Dream Explanation  Even climbing an old ladder in a dream means success in one's business, exaltation and profits. Falling from a ladder in a dream means adversities, spiritual fall and temptation. Climbing down a ladder in a dream means business losses. If the ladder breaks in the middle of one's assent or descent in the dream, it means losing to one's competition.