What are the three main features that separate commercial farming from subsistence agriculture?

The coco river is a natural border between nicaragua and which other country

Paraguay is one of the only two countries in the americas that don't have a coastal border. the country is slightly smaller than california. it was under a military dictatorship for 35 years, ending in 1989; today it is a constitutional republic. most of the population is roman catholic, and over 60% of the people live in cities. its environment is threatened by deforestation and water pollution. which of the following facts from the paragraph above best describes an element of paraguay's culture? (apex)

If the basis of an isosceles trapezoid have lengths of 11 and 26, what is the length of the median?