09
Dec
Question 2: Find the surface area of a sphere of diameter:
(i) 14cm (ii) 21cm (iii) 3.5m
Sphere – Surface area
********* This section will be updated later *********
Surface area of sphere = 4πr²
r = radius of sphere
Lateral or curved surface area of hemisphere = 2πr²
Total surface area of hemisphere = 2πr² + πr² = 3πr²
r = radius of sphere
What is Area / Surface area / Volume
It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.
Chapter 13 – Surface areas and Volumes
Concepts
- Area / Surface area / Volume – Introduction
- Surface Area of Cube and Cuboid
- Volume Of Cuboid and Cube
- Surface Area of Right Circular Cylinder
- Volume and capacity of Cylinder
- Right circular Cone
- Surface Area of Right circular Cone
- Volume of Cylinder vs Cone
- Litres and Cubic centimetre (cm³)
- Cubic meters to litres
