Given that 25 circular plates each with radius (r) = 10.5cmThickness = 1.6cmSince plates are placed one above other so its height becomes =1.6 X 25 = 40cmVolume of cylinder = πr2h= π(10.5)2 x 40= 13860cm3Curved surface area of a cylinder = 2πrh= 2 x π x 10.5 x 40=2 x 22/7 x 10.5 x 40=2640cm2∴Volume of cylinder= 13860cm3Curved surface area of a cylinder = 2640cm2