A spherical ball of iron has been melted and made into small balls. If the radius of each smaller ball is one-fourth of the radius of the original one, how many such balls can be made ?

A hemispherical solid of radius r_1 units is melted and made into 32 identical spherical balls each of radius r_2 units then r_1 : r_2 is:

A spherical ball of radius r_(1) units is melted to make 8 new identical balls each of radius r_(2) units. Then r_(1) : r_(2) is

A solid metal ball has a spherical cavity. If the ball is heated, the volume of the cavity will

An iron sperical ball of volume 232848 cm^(3) has been melted and converted into a cone with the vertical angle of 120^(@) . What are its height and base?

In the example given can you find the cost of each bat and ball ?

The diameter of a spherical ball is 21cm . How much leather is required to prepare 5 such balls.

There are two Urns. The first one contains 4 white and 6 blue balls and the other contains 4 white and 5 blue balls. One of the urns is selected at random and a ball is drawn. If the ball drawn is white, find the probability that it is drawn from the first urn.