Answer:
1,487.3m³
Step-by-step explanation:
Volume of a square based pyramid is expressed as;
V = BH/3
B is the base area
H is the height of the pyramid
Since the side length of the base is 15.3m;
Base area = L²
Base area = 15.3²
Base area = 234.09m²
Height of pyramid = 19.6m²
Get the volume
Volume of the square based pyramid = (234.09*19.6)/3
Volume of the square based pyramid =1,487.3m³ (to the nearest tenth)