Important questions on Surface Area Of Right Circular Cylinders And Cones

MEDIUM

A cylinder of circumference $8$ cm and length $21$ cm rolls without sliding for $421 $ seconds at the rate of $9$ complete rounds per second. Find the area covered by the cylinder in $421 $ seconds.

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MEDIUM

The ratio of radii of two right circular cylinders is 2: 3 and the ratio of their heights is 5:4. Find the ratio of their curved surface areas and volume.

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MEDIUM

A hollow cylinder has only

A

curved surface area

B

total surface area

C

volume

D

Perimeter

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MEDIUM

A medicine capsule as shown in the figure us in the shape of a cylinder with two hemispheres stuck to each of its ends. The length of the entire capsule is $12mm$, and the diameter of the capsule is $5mm$. Find its surface area.

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MEDIUM

The inner radius of a cylindrical wooden furniture is $8$ m and its outer radius is $12$ m. The height of the furniture is $35$ m. Find its lateral surface area. (Use $π=22/7$).

A

$880m_{3}$

B

$880m_{2}$

C

$88m_{2}$

D

$880mm_{2}$

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MEDIUM

In a cylindrical vessel $30800cm_{3}$ water can be filled. If the internal radius of vessel is $14cm$. Find it curved surface area.

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MEDIUM

The given figure shows a metal pipe $77cm$ long. The inner diameter of cross section is $4cm$ and the outer one is $4.4cm$. Find its (i) inner curved surface area (ii) outer curved surface are (iii) total surface area

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MEDIUM

Write the number of surfaces of a right circular cylinder.

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MEDIUM

The area of one end of a cylinder is $154cm_{2}$ and its height is $21cm$. Find the volumeand curved surface area of cylinder.

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MEDIUM

Curved surface area of a right circular cylinder is $4.4$$m_{2}$ If the radius of the base of the cylinder is $0.7$ m then its height is