The volume of this cylinder is 54,287 cubic units.
I assume the volume is 100 cubic cm and NOT 100 cm. The volume of a cylinder is cross-sectional area * height 100 = cross sectional area * 30 so that the area of the bottom, or cross section, is 100/30 = 3.333... sq cm
Volume = pi*152*30 = 21205.75 cubic units to 2 d.p.
Volume of the cylinder: pi*15^2*12 = 2700*pi cubic inches
The volume is 8,460.27 US gallons.
In order to find the volume of the cylinder more information is required as to the actual dimensions of the cylinder. Volume is calculated by knowing the radius and height of the cylinder.
Use the formula for the volume of a cylinder: V = radius2 x Pi x height102 x 3.142 x 30 = about 9,426 cubic units
Volume of a cylinder = pi*radius2*height Volume = 5301.437603 or 5301.438 cubic inches to 3 d.p.
30. It's the Base Area times the height.