How fast would you have to launch a ball at 45 degrees above the horizontal to reach a height of 49 meters in the air? [must show work]

Let say the ball is projected in air with speed "v" at an angle of 45 degree

now the two components of its velocity will be given as

now the maximum height reached by the ball is 49 m

so as it will reach to maximum height its velocity in y direction will become zero

so we can use kinematics in y direction

so the speed with which ball is projected upwards must be 43.8 m/s