[" the radnis and the height of a cone are reduced to "25%" and "50%" of their initial vahe,respectively.the "],[" hume of the cone is reduced to "]

If the height of a cone is increased by 50%, then what is the percentage increase in the volume of the cone?

The height and radius of a right circular cone are increased by 20%and 25% respectively. Find the ratio of the volume of new cone and old cone.

Each of the height and base radius of a cone is increased by 100%. The percentage increase in the volume of the cone is

If the height of the right circular cone is increased by 200% and the radius of the base is reduced by 50%, then the volume of the cone

If the circumference of a circle is reduced by 50%, then by how much per cent is the area of the circle reduced ?

If the current flowing through a coil is reduced by 50% then the energy in the coil

An electrostatic force of attraction between two point charges A and B is 1000 N.If the charge on A is increased by 25% and that on B is reduced by 25% and the initial distance them is decreased by 25% , find the new force of attraction between them.

If the height of a right circular cone is increased by 200% and the radius of the base is reduced by 50%, then the volume of the cone (a) remains unaltered (b) decreases by 25% (c) increases by 25% (d) increases by 50%