Q3 of 52 Page 145

Find the total surface area of a cylinder if the radius of its base is 5 cm and height is 40 cm.

Radius of base of cylinder, r = 5 cm

Height of cylinder, H = 40 cm


As we know,


Total surface area of cylinder, A = 2πr (r + h)


On substituting the values, we get,


A = 2× (3.14)× 5× (5 + 40)


⇒ A = 1413 sq.cm


∴ Total surface area of square is 1413 sq. cm


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