Formula for curved surface area of cylinder________

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$2 π r^{2} h$

$2 π r h$

$2 π r$

answer is B.

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Detailed Solution

A cylinder's radius 'r' is the radius of its base.

The cylinder's surface area is the area of a curved surface of a cylinder, including the circular top and base. The area of the rectangle is now equal to length breadth.

The circumference of the circle is 2r, and the height is h.

The curved surface's area will be $2 π r h$ .

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