In the formula V = 1/(2r)^2, if r is halved, then V is multiplied by? Select the correct option:
A) 16
B) 8
C) 4
D) 1/8
E) 1/64
Say r=6 =&gt; V1 = 1/144   when r=3; V2 = 1/36   V2 = 36*V1.   Answer : 4
<result>C</result>
In the formula V = 1/(2r)^2, if r is halved, then V is multiplied by?