Volume of a sphere = (4/3) (pi) r^3
Volume of a semi sphere = (2/3) (pi) r^3
The diameter of the floor is 18 feet, so the radius is 9 feet
[tex]V\text{ = }\frac{2}{3}\pi\cdot9^3=\frac{2}{3}\pi\cdot729\text{ =}\frac{1458}{3}\pi=486\pi=1526.8140[/tex]
Answer:
V = 1526.8140 cubic feet
By approximation, first option 1,527 cubic feet
