# CBSE Class 8 Maths Surface Area And Volume Of Cylinder

- The ratio of the radii of two cylinders is 1:2, and the ratio of their heights is 2:3, find the ratio of the volumes of the two cylinders.
- what is the formula of lateral surface area of cylinder
- sphere is converted into a cylindrical wire of length 32 metre. The diameter of sphere is 20 times of the diameter of the cylindrical wire. What is the radius of sphere?
- Find the total surface area of a cylinder whose radius of the base =7cm and height=20cm
- A metallic pipe is 0.7 cm thick. Inner radius id 3.5 cm and length is 5 dm. Find its total surface area.
- A silver paper covers a packet of 10 choclates Coin of radiud 2cm and 7mm thickness. How much paper need to cover 1000 such packets.
- The wall of length 10 m. was to built across an open ground .the height of wall is 4m. And thickness is 24 cm . If this wall is to built uo with bricks whose dimension are 24cm×12cm×8cm, how many bricks would be required ? Ans - 4167
- Find the radius of the base of a cylinder whose volume and height are 1.54 cm
^{3}and 1 m respectively. - A 20 m deep well with diameter 7 m is dug and the earth from digging is evenly spread out to form a platform 22 m by 14 m. Find the height of the platform.
- How many silver coins, 1.75 cm in diameter and of thickness 2 mm, must be melted to form a cuboids of dimensions?

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