Question

how many solid spere ,each of diameter 6cm can be made by melting a solid metal cylinder of height 45cm and 4cm

Answer 1

volume of the cylinder=πr²h
=π*16*45
volume of sphere=4/3*πr³
=4/3*π*9=4*π*3

no. of spheres=volume of cylinder/volume of
each sphere


=π*16*45/π*4*3
=4*15=60

:-no. of spheres=60