Question

a Metallic sphere of radius 8.4cm is melted and recost into shape of a cylinder of radius=4cm.show that the height of cylinder is 49.4cm​

Answer 1

Step-by-step explanation:

Volume.of.sphere=4/3 πR^3

Volume.of.cylinder=πr^2h

R=8.4cm

r=4cm

4/3πR^3=πr^2h (pi gets cancelled)

4R^3=3r^2h

4*8.4*8.4*8.4/3*4*4=h

2370.816/48=h

h=49.392cm

=49.4(approx)

Answer 2

Answer:

49.4

Step-by-step explanation:

Volume.of.sphere=4/3 πR^3

Volume.of.cylinder=πr^2h

R=8.4cm

r=4cm

4/3πR^3=πr^2h (pi gets cancelled)

4R^3=3r^2h

4*8.4*8.4*8.4/3*4*4=h

2370.816/48=h

h=49.392cm

=49.4(approx)