The circumference of the base of a cylindrical tank is 88m and it is 15m deep. find how much litres
of water can be filled in the tank?

Volume of Cylinder =  πr²h

Where r = radius, h = height.

Circumference of the base  = 88

That is   2πr = 88
                 πr = 88/2
                 πr = 44
                   r =  44/π                h = 15 m

Volume = πr²h  =  π *(44/π)*(44/π)* 15  

Volume =  (44*44*15) / π =   9243.719 m³         

But 1 m³ = 1000 litres 

Therefore Volume in litres = 9243.719 * 1000 = 9243719 litres

Volume ≈    9243719 litres