How high is a building when an anvil takes 4 seconds to hit the ground?

Question

How long will it take a piano to hit the ground when dropped off a building 103 meters high?

Answer 1

a. h = 0.5g*t^2 = 4.9*4^2 = 78.4 m

b. h = 0.5g*t^2
h = 103 m.
g = 9.8 m/s^2
Solve for t.