Mathematics
A solid metal sphere is cut through its center into 2 equal parts. If the diameter of the sphere is cm, find the total surface area of each part correct to two decimal places.
Related Questions
The volume of one sphere is 27 times that of another sphere. Calculate the ratio of their:
(i) radii
(ii) surface areas
If the number of square centimeters on the surface of a sphere is equal to the number of cubic centimeters in its volume, what is the diameter of the sphere ?
The internal and external diameters of a hollow hemispherical vessel are 21 cm and 28 cm respectively. Find :
(i) internal curved surface area,
(ii) external curved surface area,
(iii) total surface area,
(iv) volume of material of the vessel.
A solid sphere and a solid hemi-sphere have the same total surface area. Find the ratio between their volumes.