In the formula V = 1/(4r)^2, if r is halved, then V is multiplied by
Choices.
A) 64
B) 8
C) 4
D) 64
E) 1/64
Say r=2 =&gt; V1 = 1/64   when r=1; V2 = 1/16   V2 = 4*V1.   Answer=44* 1.= 
<gadget id="calculator">4* 1.</gadget>
<output>4</output>
4=4
<result>C</result>
In the formula V = 1/(4r)^2, if r is halved, then V is multiplied by