Dayana G. answered 06/01/21
Experience Math Tutor 9+ years (Middle School through College Level)
So since they're asking for the lateral area, this means they want the surface area of this entire figure.
As a REGULAR HEXAGONAL PYRAMID, we can see in the figure we have 6 (corresponding to the 6 sides of the hexagon) equilateral triangles, and 1 hexagon to calculate the areas of to find the area of the entire figure.
triangles: we are given the BASE = 18ft, but the 22ft is not the side length of the triangle but the height, which is great! so together
6 triangles: BASE =18FT HEIGHT = 22 FT.
by the equation my lovely colleague Mark M. posted, we can calculate the total area of the triangles:
Aone face = (1/2)(base)(height)
Atotal of 6 triangles = 6 X (1/2) (18FT) (22FT) = 1188FT^2
hexagon: we're given the side length of the hexagon as LENGTH = 18FT
using the area of hexagon equation found on google, we can calculate that area as well
Area = (3√3 s2)/ 2 where s is the length of a side of the regular hexagon
Ahexagon = (3√3 18FT2)/ 2 = 841.8 FT^2 (rounded)
FINALLY, we add the areas of the 6 triangles to the area of 1 hexagon to get our final area
Agrand total = 1188FT^2 + 841.8 FT^2 = 2030. FT^2
Agrand total = 2030. FT^2