Two spheres of the same metal weigh 1 kg and 7 kg. The radius of the smaller sphere is 3 cm. The two spheres are melted to form a single big sphere. Find the diameter of the big sphere.
Solution:
A hollow copper pipe of inner diameter 6 cm and outer diameter 10 cm is melted and changed into a solid circular cylinder of the same height as that of the pipe. Find the diameter of the solid cylinder.
Solution:
More Solutions:
- The curved surface and the total surface of a cylinder is 1 : 2.
- A rectangular sheet of tin foil of size 30 cm x 18 cm.
- The given figure shows a metal pipe 77 cm long.
- Find the volume of the wood and that of the graphite.
- A cylindrical roller made of iron is 2 m long.
- Write whether the following statements are true or false.