The radius of a circle is 142 yards what is the circle circumference use 3.14 answer

David leaves his house to go to school. he walks 200 meters west and 300 meters north. how far is david from his original starting point?

Atourist boat is used for sightseeing in a nearby river. the boat travels 2.4 miles downstream and in the same amount of time, it travels 1.8 miles upstream. if the boat travels at an average speed of 21 miles per hour in the still water, find the current of the river.

Five cds, which is 1/8 of lisa's collection, were gifts. how many were not gifts? explain: