The volume V of a certain cone can be found using formula v= 1/3b (25), where B is the area of the base of the cone. If the area of the base cone is 90 square centimeters, then what is the volume of the cone

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.