In a cylinder, the radius is doubled and height is halved, the curved surface area will be

Halved

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Doubled

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Same

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Four times

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Solution

The correct option is C Same
Explanation:
We know that the
Curved surface area of a cylinder = $2 π r h$
Given that, r = 2R, h = $\frac{H}{2}$
Hence, the CSA of new cylinder $= 2 π \times (2 R) \times (\frac{H}{2}) = 2 π R H$
Therefore. the answer is " Same".

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Similar questions

Q. In a cylinder, if radius is doubled and height is halved, curved surface area will be _________.

Q. Question 4
In a cylinder, the radius is doubled and height is halved, then the curved surface area will be:

A) Halved
B) Doubled
C) Same
D) Four times

Q. If in a cylinder, the radius is doubled and the height is halved, then what would happen to the curved surface area?

Q. Mark the correct alternative in each of the following:

In a cylinder, if radius is doubled and height is halved, curved surface area will be

(a) halved

(b) doubled

(c) same

(d) four times

Question 6

If the height of a cylinder becomes $\frac{1}{4}$ of the original height and the radius is doubled, then which of the following will be true ?
(a) Curved surface area of the cylinder will be doubled
(b) Curved surface area of the cylinder will remain unchanged
(c) Curved surface area of the cylinder will be halved
(d) Curved surface area will be $\frac{1}{4}$ of the original curved surface

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In a cylinder, the radius is doubled and height is halved, the curved surface area will be

The correct option is C SameExplanation: We know that the Curved surface area of a cylinder = 2πrh Given that, r = 2R, h = H2 Hence, the CSA of new cylinder =2π×(2R)×(H2)=2πRH Therefore. the answer is " Same".

The correct option is C Same
Explanation:
We know that the
Curved surface area of a cylinder = $2 π r h$
Given that, r = 2R, h = $\frac{H}{2}$
Hence, the CSA of new cylinder $= 2 π \times (2 R) \times (\frac{H}{2}) = 2 π R H$
Therefore. the answer is " Same".