Maharashtra State BoardSSC (English Medium) 9th Standard
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Radius of Base of a Cylinder is 20 Cm and Its Height is 13 Cm, Find Its Curved Surface Area and Total Surface Area. ( π = 3.14) - Geometry

Sum

Radius of base of a cylinder is 20 cm and its height is 13 cm, find its curved surface area and total surface area. (π = 3.14)

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Solution

Radius of the cylinder, r = 20 cm
Height of the cylinder, h = 13 cm

∴ Curved surface area of the cylinder = 2πrh= 2 × 3.14 × 20 × 13
= 1632.80 cm2

Also,

Total surface area of the cylinder = 2πr(r + h) = 2 × 3.14 × 20 × (20 + 13) = 2 × 3.14 × 20 × 33 = 4144.80 cm2

Thus, the curved surface area and the total surface area of the cylinder is 1632.80 cm2 and 4144.80 cm2, respectively.

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APPEARS IN

Balbharati Mathematics 2 Geometry 9th Standard Maharashtra State Board
Chapter 9 Surface Area and Volume
Practice Set 9.1 | Q 7 | Page 115
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