Answer:
The surface area of her tent = 36.661 ft²
Explanation:
∵ The tent is shaped square pyramid without base
∴ The tent has 4 triangular faces
∴ Its surface area = area of each triangular face × 4
∵ The triangular face has base of length 4ft and 2 equal sides of
length 5ft
∴ The height of the Δ =

∴ Its surface area = 4 ×
= 36.661 ft²