SSC (English Medium) Class 8Maharashtra State Board
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# Find the Area of Base and Radius of a Cylinder If Its Curved Surface Area is 660 Sqcm and Height is 21 Cm. - SSC (English Medium) Class 8 - Mathematics

ConceptSurface Area of Cylinder

#### Question

Find the area of base and radius of a cylinder if its curved surface area is 660 sqcm and height is 21 cm.

#### Solution

Curves surface area = 660 sq cm
Height = 21 cm
Curved surface area =  2π rh = 2 xx 22/7 xx r xx 21 = 660

⇒ 132 r = 660

⇒ r = 660/132 = 5 cm

Area of base = π r² = 22/7 xx 5² = 78.57 sq cm

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#### APPEARS IN

Balbharati Solution for Balbharati Class 8 Mathematics (2019 to Current)
Chapter 16: Surface area and Volume
Practice Set 16.2 | Q: 3 | Page no. 111
Solution Find the Area of Base and Radius of a Cylinder If Its Curved Surface Area is 660 Sqcm and Height is 21 Cm. Concept: Surface Area of Cylinder.
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