Please help me with these ty

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 =

Order the measurements from the least to the greatest. 2,720 ml , 24.91 l , 0.0268 kl

What is the area of the shaded sector?