a chord subtends an angle of 34 at the center of a circle of radius 4cm find the length of the chord (take =22/7)​

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

Can someone answer this question for me

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.