Find the perimeter of this figure to the nearest hundredth use 3.14 to approximate pi P=?ft

Ahovercraft takes off from a platform. its height (in meters), xx seconds after takeoff, is modeled by: h(x)=-2x^2+20x+48h(x)=−2x 2 +20x+48 what is the maximum height that the hovercraft will reach?

What is the period of the sinusoidal function ?

How many degrees are there in the central angles in a circle