What should be the distance between the object and magnifying glass (converging lens of focal length 10 cm) if the virtual image of each square is to have an area of $6.25 mm^2$, would you be able to see the square distinct with your eyes very close to magnifier ?

Question

$\begin{array}{1 1} v=15 \;cm \\ v= -15\;cm \\ v= 20 cm \\ v= -20\;cm \end{array} $