Question

how many spherical balls each of radius 1cm can be made from a solid sphere of lead of radius 12 ​

Answer 1

volume of solid sphere of lead = 4/3*πr3

=> 4/3*π*12*12*12

=>2304π cm³

volume of spherical ball of 1cm =

4/3π

let the no. of balls that can be formed be n

n*π*4/3 = 2304π

n = 2304*3/4

=> 1728 balls

so 1728 balls can be made of radius 1 cm from a sphere of radius 12 cm