The radius of circle l is 22 cm.
what is the length of its diameter?
a.
88 cm
b.
44 cm
c.
22 cm
d.
11 cm

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 =