How do we solve this ?

Say that each side the equilateral triangle is of length [imath]\bf a[/imath] units.
It is well known that the area of an equilateral triangle is [imath]\dfrac{\sqrt{3}}{4}\bf{a}^2[/imath] SEE THIS
Using the given area of [imath]\sqrt 3[/imath] can you show that [imath]\bf{a}=2~?[/imath]
Now finish! Post your result for any further help.

[imath][/imath]
 
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