7 ft You are going to use an incline plane to lift a heavy object to the top of a
shelving unit with a height of 7 ft. The base of the incline plane is 10 ft from
the shelving unit. What is the length of the incline plane?
(This figure is

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.