What is the lateral area of the pyramid?

We have two triangles with base 9ft and height 12.3ft and two triangles with base 11ft and height 11.9ft.

The formula of an area of a triangle:

Triangle #1:

b = 9ft and h = 12.3ft. Substitute:

Triangle #2:

b = 11ft and h = 11.9ft. Substitute:

The Lateral Area:

the distance from any point on the parabola to the focus is the exact same as the distance from that point to the directrix.

if you could provide answer choices that might allow me to answer the question easier if my above answer isn't an option! (:

step-by-step explanation:

b and c