#### 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

Is there an error in this question or solution?

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.