Humans endow the physical environment with cultural values by regarding it as a collection of which are substances that are useful to people, economically and technologically feasible to access, and soci

by regarding it as a collection of RESOURCES,
Resources refers to the substances found in the environments which are useful to the people economically and technologically; it is also socially acceptable for use by the people. Resources can be found in diverse places, such as in the ground, in the water and on the land.

S^2 = a4^2 = a4 * 4 = a16 centimeters = area of the square