The ratio of lateral surface areas of two cylinders with equal heights as 'h' and radii as 'R' and 'r' respectively is :

H:h

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R:r

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R²: r²

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Solution

The correct option is B
R:r

Lateral surface area of first cylinder = 2 $π$ R h

Lateral surface area of second cylinder = 2 $π$ r h

So, ratio of the surface areas is R : r.

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The ratio of lateral surface areas of two cylinders with equal heights as 'h' and radii as 'R' and 'r' respectively is :

The correct option is B R:rLateral surface area of first cylinder = 2π R h Lateral surface area of second cylinder = 2π r h So, ratio of the surface areas is R : r.

The correct option is B
R:r

Lateral surface area of first cylinder = 2 $π$ R h

Lateral surface area of second cylinder = 2 $π$ r h

So, ratio of the surface areas is R : r.