if a@b = a * b^(1/2) then 4@9 = ?
self made Choose the correct option:  A) 12  B) 6  C) 3  D) 8  E) 4
a@b = a * b^(1/2)   4@9 = 4*9^(1/2) = 4*3= 
<gadget id="calculator">4*3</gadget>
<output>12</output>
12   Correct Option: 12
<result>A</result>
if a@b = a * b^(1/2) then 4@9 = ?
self made