Question

Find the number of balls each of radius 1cm can be made from a solid sphere of lead of 6cm.

Answer 1

Let n number of small ball can be made
so

Volume of big sphere = n × volume of 1 small sphere
4/3 pi × R^3 = n × 4/3 pi r^3
(6)^3 = n× (1)^3
So n=216
216 small sphere ball can be made

Answer 2

let the no. of balls be x.
Volume if sphere=4/3πr³
=4/3 *22/7*6*6*6=

volume of spherical balls obtained =4/3πr³
4/3*22/7*1*1*1=
volume of x spherical balls =x*4/3*22/7*1*1*1=
now solve it u wl get the answer...