Write down the mathematical name of the shape made by each net

Given a circle with a radius of 2 which is the length of an arc measuring 75

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Varies inversely with x. if y=8.5 when x=-1 find x when y=-1