Hannibal as in Hannibal Leckter or Hannibal Barca?

Since the vertex angle is 40 when you draw a triangle you get 20.

The hypotenuse is 16.

Thus,

r (radius) = 16*cos 70

h (height) = 16*sin 70

Since you know the height and radius you can find everything you need by using the appropriate formula.