Answer: 1008 square yards
Step-by-step explanation:
The surface area of the regular pyramid is the sum of the triangular faces and the square base.
The formula for determining the surface area of a triangle is expressed as
Area = 1/2 × base × height
Height = 19 yd
Base = 18 yd
Area of each triangular face
= 1/2 × 18 × 19 = 171 square yards
Area of the 4 triangular faces is
4 × 171 = 684 square yards
Area of the square base = 18² = 324 square yards
Therefore, area of the pyramid is
684 + 324 = 1008 square yards
