A cylinder of radius 6 centimetres and height 18 centimetres is melted and recast into spheres of radius 3 centimetres. The number of spheres made from the cylinder is:
A14
B16
C18
D12
A14
B16
C18
D12
Related Questions:
A square pyramid is cut, open and laid flat as in the figure below. What is the surface area of this pyramid ?
In the figure ABCD is a square. The length of its diagonal is 4√2 centimetres. The area of the square is :