In the formula V = (2r)^4, if r is halved, then V is multiplied by? Select:
A) 64
B) 8
C) 1
D) 1/8
E) 1/16
Say r=2 =&gt; V1 = 256   when r=1; V2 = 16   V2 = 1/16*V1.   Answer : 1/16
<result>E</result>
In the formula V = (2r)^4, if r is halved, then V is multiplied by?