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25 circular plates each of radius 10.5cm  and thickness 1.6cm  are placed one above the other to form a solid circular cylinder. Find the curved surface area and volume of cylinder so formed?

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Given that 25 circular plates each with radius (r) = 10.5cm

Thickness = 1.6cm

Since plates are placed one above other so its height becomes =1.6 x 25 = 40cm

Volume of cylinder = 13860cm3

Curved surface area of a cylinder = 2640cm2

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