Question

a metallic cylinder of radius 8 cm and height 20 cm is melted and recasted into 15 equal small spheres. what is the diameter of each sphere?​

Answer 1

Step-by-step explanation:

volume of 15 sphere=volume of large cylinder

volume of large cylinder=π×8²×20

=1280πcm²

volume of 1 sphere=1280π/15

1280π/15=4/3πr³

r³=(1280/15)×(3/4)

r³=64

r=4

diameter=8cm