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