That is 46,800 cubic ft.
30 gallons is 4.01 cubic feet.
There are 4.01 cubic feet in 30 gallons.
The question is ambiguous. Do you mean how many cubic feet are in a sphere with radius of 30 feet?
How many imperial gallons is 30 cubic feet of water?
30 liters are equal to 1.06 (1.05944) cubic feet.
27 cubic feet is about 764.55 liters.
24 x 30 = 720 square feet.
30 x 33 x 66 = 65,340 (cubic feet).
10,800 cubic feet
9.27 cubic feet
The volume of this room is 7,200 cubic feet. (30 x 30 x 8 = 7,200)
24 inches x 30 inches x 40 inches =28,800 cubic inches =16 and 2/3 cubic feet =0.6173 cubic yard (rounded)