How many balls of radius 4cm can be made from a solid sphere of lead of radius 8 cm?
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Answer:
8
Step-by-step explanation:
Radius of big sphere,R = 8cm
Vol. of big sphere = 4/3πR³
Radius of small sphere,r = 4cm
Vol. of small sphere = 4/3πr³
No. of sphere that can be made = vol. of big sphere ÷ vol. of big sphere = 4/3πR³÷4/3πr³
= R³/r³ = 8³/4³ = 8
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