For example, if you figured 2000 square feet, you need 2000 square feet/100 square feet in a square = 20 squares of slate. A simple roof might be all rectangles (Area = length * width). There are often triangular sections to compute (Area = the base * height/ 2).
The average price for connecting flights from New York to Mexico City is $517. The average price for non-stop flights from New York to Mexico City is $440. The chart below shows up to date information regarding non-stop flights from New York to Mexico City.
From the US and Canada most foreign visitors reach Guadalajara by air. Flights are frequent and reasonably priced. Competition sometimes shaves tariffs down as low as $250 for a Guadalajara round trip from on of the Guadalajara depearture cities like Chicago, New York, or Los Angeles.