I had a hexagonal aquarium as a kid and wanted to use it now, 20 years later, as a Quarantine Tank. But ummm, I didn’t know how many gallons it was. So after searching thru like 20 google pages, I realized… it should be easier to calculate it. So I want to simply explain how:
VOLUME OF TRIANGULAR PRISM:
You need 2 Formulas:
FORMULA 1: V=BH
where B is the area of the Triangle and H is the height of the triangular prism (so basically the height of the aquarium)
FORMULA 2: B=(bh)/2
where b is the base or “width” of the triangle (or 1 side of the hexagon) and h is the height of the triangle (not the triangular prism; only the triangle; so basically, the “radius” of the aquarium)
Plug in your numbers. My tank is 10″ high. One hexagon side is 5″ wide. Radius of my Tank is 6″.
B=(5*6)/2 | so B = 15
V= 150 cubic inches
NOW MULTIPLY THAT BY 6 and you get 900 cubic inches.
Visit www.google.com and type “900 cubic inches” and a converter automatically comes up, and select gallons and your answer is: