Question

just please do this like I can understand ......please

Answer 1

hope it will help to solve other..
while solving take 4 pair after decimal
you can also choose the pair of zero

Answer 2

$\sqrt{7}$ = 2.6457513110
$\sqrt{2.5}$ = 1.5811388300
$\sqrt{ \frac{25}{12} }$ = 1.4433756729
$\sqrt{ \frac{2571}{7} }$ = 19.16469969