If the area of the remaining paper is 13 square centimeters (cm2) after a cube is cut from a rectangular piece of paper measuring 40 centimeters (cm) long and 25 centimeters (cm) wide, how many centimeters (cm) is one edge of the cube?
40 25 [OP_MUL] 136 [OP_SUB] 6 [OP_DIV] 1/2 [OP_POW]
var_a = 40
var_b = 25
var_c = var_a * var_b
var_d = 136
var_e = var_c - var_d
var_f = 6
var_g = var_e / var_f
var_h = 0.5
var_i = var_g ** var_h
print(int(var_i))