The length of one side of a cube-shaped die is 9 centimeters (cm). Choose one side of the die and find how many centimeters (cm) is the sum of the lengths of the sides that make up this side.
9 4 [OP_MUL]
var_a = 9
var_b = 4
var_c = var_a * var_b
print(int(var_c))