Question 1185478
the formula for the area of an equilateral triangle is:


A = sqrt(3)/4 * s^2


A is the area.
s is the length of a side.


when A = 310, the formula becomes:


310 = sqrt(3)/4 * s^2


multiply both sides of the equation by 4 and divide both sides of the equation by sqrt(3) to get:


310 * 4 / sqrt(3)= s^2


solve for s to get:


s = sqrt(310 * 4 / sqrt(3)) = 26.75657552.


the perimeter of the triangle would be 3 * sqrt(310 * 4 / sqrt(3)) = 80.26972657.


round as you see fit.