A:AnswerI'm guessing this is the 30" model based on the price and the Model number given and cross reference with INTEX site
https://intexcorp.com/products/above-ground-pools/easy-set/8ft-x-30in-easy-set-pool/
A:AnswerCalculate the volume of the pool
V=π*r^2*h
assuming a radius of 4' (diameter is stated as 8') and a height of 30" or (2.5')
V = 3.14(4^2)*2.5 = 3.14*16*2.5 = 125.6 Cu Ft
1 Cu Ft = 7.48 Gallons
125.6 Cu Ft * (7.48 Gallons/ 1 Cu Ft) = 939.488 Gallons
Therefore by my estimates it should hold around 940 Gallons