In a rhombus with an area of 64/5 square centimeters (cm2), two non-adjacent vertices were selected and the distance was measured, which was 64/9 centimeters (cm). Find the distance between two unselected vertices.
64/5 2 [OP_MUL] 64/9 [OP_DIV]
var_a = 12.8
var_b = 2
var_c = var_a * var_b
var_d = 7.111111111111111
var_e = var_c / var_d
print('{:.2f}'.format(round(var_e+1e-10,2)))