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Basic Concepts of 3D Figures (Sphere & Hemisphere) - Mensuration Video

FAQs on Basic Concepts of 3D Figures (Sphere & Hemisphere) - Mensuration

1. What is the formula to calculate the surface area of a sphere?
Ans. The formula to calculate the surface area of a sphere is 4πr^2, where r is the radius of the sphere.
2. How do you find the volume of a hemisphere?
Ans. To find the volume of a hemisphere, you can use the formula (2/3)πr^3, where r is the radius of the hemisphere.
3. Can the surface area of a hemisphere be greater than the surface area of a sphere?
Ans. No, the surface area of a hemisphere is always half the surface area of a sphere with the same radius. This is because a hemisphere is just half of a sphere.
4. What is the relationship between the volume of a hemisphere and the volume of a sphere?
Ans. The volume of a hemisphere is half the volume of a sphere with the same radius. This is because a hemisphere is just half of a sphere.
5. How can we differentiate between a sphere and a hemisphere?
Ans. A sphere is a three-dimensional figure that has all points on its surface equidistant from its center. On the other hand, a hemisphere is a half of a sphere, where the flat face is the base of the hemisphere and the curved surface is the rounded part.
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