David wants to measure the diameter of his circular pool, but he does not have a tape measure long enough to reach across the pool. He measures around the pool edge and finds that it has a circumference of approximately 85 feet. Find the diameter. (Round to the nearest whole number

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

You drop a rubber ball off the roof of a 50 meter high building onto a paved parking lot. it bounces back up with every bounce, but not quite all the way back up to you. after the first bounce it bounces back only 80 percent of the distance it was dropped from. the pattern continues, meaning after every bounce it comes up to just 80 percent of the previous maximum height. so if before the first bounce the height is 50 meters, what height does the ball reach after the fifth bounce? round your answer to one decimal place and chose the correct response from the choices below:

Which point lies on a circle with a radius of 5 units and center at p(6, 1)?