10 POINTS AND CROWN IF YOU DO THIS

Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?

A. 10.8 cm^2 b. 5.4 cm^2 c. 7.4 cm^2 d. 21.6 cm^2

Asail is in the form of a right triangle that is 3 times as high as it is wide. the sail is made from 6 square meters of material. what is the height?