Can you draw a line on the surface of a sphere which lies wholly on it?

Can you find the surface area of sphere in any other way?

Can you find the surface area of sphere in any other way?

Can you find the surface area of sphere in any other way?

A chain of length l and mass m lies on the surface of a smooth sphere of radius R>l with one end tied to the top of the sphere.

A parallel beam of light emerges from the opposite surface of the sphere when a point source of light lies at the surface of the sphere. The refractive index of the sphere is

A ring of radius 'R' having change 'q' uniformly distributed over it passes through a sphere lies at circumference of ring the centre of ring lies at surface of sphere.Then flux linked with sphere is

How can you represent the surface expansion?