Help me please I’m in 8th grade

The number of potato chips in a bag is normally distributed with a mean of 71 and a standard deviation of 2. approximately what percent of bags contain between 69 and 73 potato chips? approximately 68% approximately 71% approximately 95% approximately 99.7%

What is the measure of angle tvu shown in the diagram below

Find the area of the regular hexagon if a side is 20 cm.