Please help Ill give out most and extra points !!!

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

The longer leg of a 30° 60° 90° triangle is 16 times square root of three how long is a shorter leg

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.