The Lin family drove down to Oregon, averaging 45 miles per hour. At this rate, how far did they travel in 8 hours? They traveled miles .

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Asphere has a diameter of 10 in. what is the volume of the sphere?

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.