Acircle has a circumference of 16yds. find the area.

pls answer now

This is geometry. could anyone ? i can't fail this class. my grade is quite low already.

How many different triangles can be constructed with the angle measurements of 134° 10° and 36° ?

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 =