[masraum]

< edit > I screwed up again, thanks dad911 < /edit >

This is more difficult, but it still works out the same way. Getting the measure of a side when the area is 16 is messier with the correct formula (assuming you can't use a calculator and give the answer in decimals).

16 = √3/4•sē

s = 8/fourth root of 3
s' = looking for
A = 16
A' = 4

A = √3/4•sē
A' = √3/2•ss'

s' = 2A'/(s•√3)

s' = 8/(8/(fourth root of 3)•√3)

Assuming I didn't screw up again....

s' = 1/fourth root of 3

Sheesh, I hope that's right, but having to use the fourth root would be unusual for most math classes