← 2.7 Surface Area and Volume of Solids
Surface area of spheres and hemispheres
Mathematics · Grade 10 · about 40 minutes
A sphere is 4 pi r squared; a hemisphere is 2 pi r squared if open and 3 pi r squared if the flat face is included.
Sign in to read this lesson
Lessons are for learners and teachers with an account. Browsing the curriculum — subjects, strands and what each sub-strand covers — stays open to everyone.
- 8 sections of explanation, worked examples and diagrams
- 1 practice task with hints and worked answers
- A quiz that marks itself as you go
- Your progress kept across every subject you take
Other lessons in this sub-strand
- Surface area
- Volume and capacity
- Nets of cubes and cuboids
- Nets of prisms and cylinders
- Nets of pyramids and cones
- Surface area of cubes and cuboids
- Surface area of prisms
- Open, closed and hollow cylinders
- Surface area of pyramids
- Slant height and surface area of cones
- Surface area of spheres and hemispheres
- Volume of prisms
- Volume of cylinders and pipes
- Volume of pyramids, cones and spheres
- Composite solids in Kenyan life