i want the mathematical water volume, not disk capacity in case your wondering. thanks!
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15mm Internal diameter, 120mm external diameter, 1.1 mm thick
A = Pir^2
A = Pi60^2
A = 3600Pi
A = Pi7.5^2
A = 56.25Pi
V = Pi(3600 - 56.25) * 1.1
V = 3898.125Pi mm^3
V ≈ 12246.32 mm^3
A = Pir^2
A = Pi60^2
A = 3600Pi
A = Pi7.5^2
A = 56.25Pi
V = Pi(3600 - 56.25) * 1.1
V = 3898.125Pi mm^3
V ≈ 12246.32 mm^3