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?
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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
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