Answer :

Given,


Diameter of cylinder = 28 cm


Height of cylinder = 40 cm


Radius of cylinder =


Curved surface area of cylinder = 2πrh = 2 × × 14 × 40 = 44 × 40 × 2 = 3520 cm2


total surface area of cylinder = 2πrh + 2πr2 = 2πr(h + r) = 2 × × 14 × 54 = 88 × 54 = 4752 cm2


Volume of cylinder = πr2h = × 14 × 14 × 40 = 24640 cm3


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