Math questions need help?

An acute triangle has sides that are 14mm and 97mm long, respectively. The 3rd side of the triangle must be greater than what whole number of millimeters. 2). In the center of town there is a square park with side length 30ft. If a person walks from one corner of the park to the opposite corner, how far does he walk? 3). An equilateral triangle has an altitude of 15 what is the perimeter of the triangle. Leave answer in simplest radical form. 4).the hypotenuse of a 30. -60. -90 triangle is 24.2 ft explain how to find the lengths of the legs of the triangle. 5). A person can see the top of building at an angle of 65 degrees. The person is standing 50 ft away from the building and has an eye level of 5ft how tall is the building? 6). A fire ranger on a 150 ft tall tower spots a fire at a 30 degree angle of depression. How many feet away from the tower is the fire? 7). A wildfire person looks up at a 78 degree angle of elevation to see a flock of geese in the air. The person is standing 200ft away from a place directly underneath the geese. How high are the geese flying?