# Curved Surface Area of a Cylinder is 1980 Cm2 and Radius of Its Base is 15 Cm. Find the Height of the Cylinder. ( π = 22 7 ). - Geometry

Sum

Curved surface area of a cylinder is 1980 cmand radius of its base is 15 cm. Find the height of the cylinder. (π = 22/7)

#### Solution

Let the height of the cylinder be h cm.
Radius of the cylinder, r = 15 cm
Curved surface area of the cylinder = 1980 cm2
∴ 2πrh = 1980 cm2

⇒ 2 xx 22/7 xx 15 xx h = 1980

⇒ h = [ 1980 xx 7]/660 = 21 cm

Thus, the height of the cylinder is 21 cm.

Concept: Surface Area of a Cuboid
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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 8 | Page 115
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