The base of a triangular prism is an equilateral triangle with a side of 3 centimeters (cm) and a height of 6 centimeters (cm). Find the sum of the areas of the sides.
3 6 3 [OP_MUL] [OP_ADD]
var_a = 3
var_b = 6
var_c = 3
var_d = var_b * var_c
var_e = var_a + var_d
print(int(var_e))