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The volume of liquid (VL) in a cylindrical reactor can be calculated from the liquid height (HL) and tank diameter (Dt) using the following equation

VL = 4/3 x π x HL x Dt3/8
VL= HL x π x Dt2/4
VL= HL x π x Dt2
VL = 4 x π x Dt2

Correct Answer: VL= HL x π x Dt2/4

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