Question 823990
a solid cone has the height of 10cm and diameter of 20cm. how many sphere of diameter 2cm can be made by melting it? 
:
Let n = no. of spheres made, cone r=10; sphere r=1
 n({{{pi*1^2}}}) = {{{1/3}}}*{{{pi*10^2*10}}}
multiply both sides 3
 3n({{{pi*1}}}) = {{{pi*1000}}}
divide both sides by pi
3n = 1000
n = {{{1000/3}}}
n = 333 spheres, with a tiny bit left over