In the formula V = 1/(2r)^3, if r is halved, then V is multiplied by?  Choose the correct choice from the following choices:
A) 16 B) 8 C) 1 D) 1/8 E) 1/64
Say r=1 =&gt; V1 = 1/8   when r=1/2; V2 = 1   V2 = 1*V1.   Answer : 8
<result>B</result>
In the formula V = 1/(2r)^3, if r is halved, then V is multiplied by?