A projectile is fired from a cliff 210 feet above the water at an inclination of 45 degree to the horizontal, with a muzzle velocity of 45 feet per second. The height h of the projectile above the water is given by h(x) = -32x^2/(55)^2 + x +210 where x is the horizontal distance of the projectile from the face of the cliff. Use this information to answer the following.