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
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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.
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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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.