CTET 2 Math and Science Jul 2019 Paper

Question : 33 of 120

Marks: +1, -0

The curved surface area of a right circular cylinder of base radius 3 cm is 94.2

cm^2

. The volume (in

cm^3

) of the cylinder is (Take π = 3.14)

141.3
125.6
113.04
138.6

Validate

Solution:

Curved surface area of right circular cylinder

=94.2 cm^2

Radius (r) = 3 cm
∴ Curved surface Area of right circular cylinder = 2πrh
∴ 2πrh = 94.2
2 × 3.14 × 3 × h = 94.2
h = 5 cm
∵ Volume of right circular cylinder

= πr^2 h

= 3.14 × (3)^2 × 5

= 141.3

cm^3

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