HELP The height, h of a baseball, in meters at t seconds after it is tossed out of a window is modeled by the equation h(t)=-5t^2+20t+63

How many seconds died it take for the baseball to land on the ground 63 meters below the window?

(Round to the nearest whole number)

You have 2 sides that are 2 cms and you have 6 sides that are 1/2 cm and you have 4 sides that are 1 cm. the smallest sides are 1/2 the medium sized sides are 1 and the smallest are 1/2. so to find the perimeter you have to add them all up together so your answer will be 11 cm's