SPHERE AND HEMI-SPHERE
Surface Area and Volume of Class 9
Sphere: Sphere is a three dimensional figure, which is made up of all points in the space, which lie at a constant distance called the radius, from a fixed point called the centre of sphere.
Hemi-sphere: If we exactly divide the sphere in two parts, then each part is known as hemi-sphere.
SURFACE AREA OF SPHERE:
= 4π
Where r = radius of sphere.
CURVED SURFACE AREA OF HEMI-SPHERE:
= 
Where r = radius of hemi-sphere.
TOTAL SURFACE AREA OF HEMI-SPHERE
= + π .
= 3π
Where r = radius of hemi-sphere.
- SOLID FIGURES
- SURFACE AREA OF A CUBOID AND A CUBE
- VOLUME OF A CUBE AND A CUBOID
- SURFACE AREA OF A RIGHT CIRCULAR CONE
- VOLUME OF RIGHT CIRCULAR CONE
- SPHERE AND HEMI-SPHERE
- VOLUME OF SPHERE AND HEMI-SPHERE
- Surface area and volume class 9 all formulas
- Solved Question
- Exercise 1
- Exercise 2
- Exercise 3 (Subjective)
- Exercise 4 (Subjective)
