You said that S = 2(lw + lh + wh)
Divide each side by 2 : S/2 = lw + lh + wh
Subtract 'lh' from each side: S/2 - lh = lw + wh
Factor the right side: S/2 - lh = w(l + h)
Divide each side by (l + h) : (S/2 - lh) / (l + h) = w
Answer:
Free trade.
Explanation:
This theoretical policy can be explained to be certain laws under which the government is seen to impose absolutely no tariffs, taxes, or duties on imports, or quotas on exports. Therefore, it is directly seen to be the opposite of protectionism, a defensive trade policy intended to eliminate the possibility of foreign competition. It is seen in terms of unrestricted measures in importation and also exportation of goods in and out of a country.
In the world of our own, which is of the recent times, this policy implementation is done by means of a formal and mutual agreement of the nations which are seen to be involved. Also this policy in some cases may simply be the absence of any trade restrictions.
