Please help with a ,b, c

A playground is on the flat roof of a city school, h, = 5.70 m above the street below (see figure). The vertical wall of the building is h = 6.80 m high, to form a 1.1-m-high railing around the playground. A ball has fallen to the street below, and a passerby returns it by launching it at an angle of 0 = 53.0 above the horizontal at a point d = 24.0 m from the base of the building wall. The ball takes 2.20 s to reach a point vertically above the wall. h (a) Find the speed at which the ball was launched. m/s (b) Find the vertical distance by which the ball clears the wall. m (c) Find the horizontal distance from the wall to the point on the roof where the ball lands. m