a) the base is a square to find its area you can use the formula:
[tex]a = {s}^{2} \\ [/tex]
a being the area and s one of the sides
now just use s= 55ft
[tex]a = {55}^{2} = 3025[/tex]
The area of the base is 3025 ft^2
b) the volume of the pyramid is:
[tex]v = \frac{b \times h}{3} [/tex]
v being the volume, b the area of the base and h the height of the pyramid
use b=3025 and h=460
[tex]v = \frac{3025\times 460}{3} = 463833.3[/tex]
the volume of the pyramid is 463833.3 ft^3
