Can someone please help me answer these equations? I have been stuck for a while please help!

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Two triangles can be formed with the given information. use the law of sines to solve the triangles. b = 49°, a = 16, b = 14

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?