09
Dec
Question 8: A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl.
Sphere – Surface area
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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
