Q16 of 79 Page 245

The total surface area of a solid hemisphere whose radius is a units, is equal to

Radius = a units

Total surface Area = Curved surface Area + Base Area

⇒ Total surface Area = 2πa² + πa² = 3πa² sq. units

Out of all the four Options,

Correct Option : B

If the volume of a sphere is cu. cm, then its radius is

The surface areas of two spheres are in the ratio of 9 : 25. Then their volumes are in the ratio

If the surface area of a sphere is 100π cm², then its radius is equal to

If the surface area of a sphere is 36π cm², then the volume of the sphere is equal to