How many metal balls each of radius 18cm can be made by melting a big metal ball whose radius is 2cm.

How many metal balls each of radius 18cm can be made by melting a big

1.	How many metal balls each of radius 18cm can be made by melting a big metal ball whose radius is 2cm.
A.	729
B.	81
C.	78
D.	189
Answer» B. 81

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How many metal balls each of radius 18cm can be made by melting a big metal ball whose radius is 2cm.

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