A14-foot tree casts an 18-foot shadow. find the angle of elevation from the tip of the shadow to the top of the tree. round the answer to the nearest tenth. a. 37.9° b. 38.9° c. 51.1° d. 52.1°

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.