Right Circular Cylinder

In a cylinder if the radius is halved and the height is doubled, its volume would be

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

If the volume of a right circular cylinder is $6160 {\mathrm{cm}}^3,$ its radius is $14$ cm, then its height is

The volume of a metallic cylindrical pipe is $748 {\mathrm{cm}}^3.$ Its length is $14$ cm and its external radius is $9$ cm. Find its thickness.

A cylindrical road roller made of iron is $1 \mathrm{m}$ wide, its inner diameter is $54 \mathrm{cm}$ and the thickness of the iron sheet rolled into the road roller is $9 \mathrm{cm}.$ Find the weight of the roller if $1 \mathrm{cu}$. cm of iron weighs $8 \mathrm{g}.$

A regular sheet of paper $30 \mathrm{cm}\times 18 \mathrm{cm}$ can be transformed into the surface of right circular cylinder in two ways, i.e. either by rolling the paper along its length or by rolling it along its breadth. Find the ratio of the volumes of the two cylinders thus formed.

A hollow cylindrical pipe is $21$ dm long. Its outer and inner diameters are $10$ cm and $6$ cm, respectively. Find the volume of the copper used in making the pipe.

How many cubic metres of earth must be dug out to sink a well $22.5 \mathrm{m}$ deep and of diameter $7 \mathrm{m} ?$

The thickness of a hollow wooden cylinder is $2 \mathrm{cm}.$ It is $35 \mathrm{cm}$ long and its inner radius is $12 \mathrm{cm}.$ Find the volume of the wood required to make the cylinder, assuming it is open on either end.

A rectangular sheet of paper $44 \mathrm{cm}\times 18 \mathrm{cm}$ is rolled along its length and a cylinder is formed. Find the volume of the cylinder. 

A milk tank is in the form of cylinder whose radius is $1.5 \mathrm{m}$ and length is $7 \mathrm{m}.$ Find the quantity of milk in litres that can be stored in the tank.

Find the cost of cementing the inner curved surface area of a tube well $280 \mathrm{m}$ deep and with $3 \mathrm{m}$ diameter at the rate of $₹2.50$ per metre square.

The radii of two circular cylinders are in the ratio $2:3$ and their heights are in the ratio $5:4$. Calculate the ratio of their curved surface areas.

The curved surface area of a cylinder is $4400 {\mathrm{cm}}^2$ and the circumference of its base is $110 \mathrm{cm}.$ Find the volume of the cylinder.

The radius and height of a cylinder are in the ratio $7:2.$ If the volume of the cylinder is $8316 {\mathrm{cm}}^3,$ find the total surface area of the cylinder.

A cylindrical tank has a capacity of $5632 {\mathrm{m}}^3.$ If the diameter of the base is $16 \mathrm{m},$ find its depth.

Into a cylindrical drum of radius $4.2$ m and height $3.5$ m, how many full bags of wheat can be emptied if the space required for wheat in each bag is $2.1$ cubic metre $?$

The radius and height of a cylinder are in the ratio $5:7$ and its volume is $550 {\mathrm{cm}}^3$. Find its radius.

If the radius of the base of a right circular cylinder is halved, keeping the height same, find the ratio of the volume of the reduced cylinder to that of the original cylinder.

The radii of two right circular cylinders are in the ratio $2:3$ and their heights are in the ratio $5:4.$ Calculate the ratio of their volumes.