Home
Class 9
MATHS
A closed cylindrical tank of height 1.4 ...

A closed cylindrical tank of height 1.4 m. and radius of the base is 56 cm. is made up of a thick metal sheet. How much metal sheet is required (Express in square meters)

Text Solution

Verified by Experts

The correct Answer is:
`6.90 m^(2) `
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • SURFACE AREAS AND VOLUMES

    NCERT BANGLISH|Exercise EXERCISE 10.3|12 Videos
  • SURFACE AREAS AND VOLUMES

    NCERT BANGLISH|Exercise EXERCISE 10.4|12 Videos
  • SURFACE AREAS AND VOLUMES

    NCERT BANGLISH|Exercise EXERCISE 10.1|8 Videos
  • STATISTICS

    NCERT BANGLISH|Exercise THINK. DISCUSS AND WRITE|1 Videos
  • THE ELEMENTS OF GEOMETRY

    NCERT BANGLISH|Exercise BRAIN TEASER|2 Videos

Similar Questions

Explore conceptually related problems

A tent is cylindrical to a height of 4.8 m .and conical above it. The radius of the base is 4.5 m. and total height of the tent is 10.8 m . Find the canvas required for the tent in square meters.

The height of a cylindrical tank is 0.4 m. The upper end of it open whose diameter is 0.16 m. It contains water up to a height of 0.16m. How much would be the time required to empty the tank through a hole of radius 10^(-3) m at the bottom of the tank?

Knowledge Check

  • An open box, with a square base, is to be made out of a given quantity of metal sheet of area A^(2) , then the maximum volume of the box is-

    A
    `(A^(3))/(3 sqrt(3) )`
    B
    `(2A^(3))/(3 sqrt(3) )`
    C
    `(A^(3))/(6 sqrt(3) )`
    D
    `(A^(3))/(2 sqrt(3) )`
  • Similar Questions

    Explore conceptually related problems

    What length of tarpaulin 3m wide be required to make a conical tent of height 8m and base radius 6m? Assume that extra length of material that will be required for stitching margins and wastage in cutting is approxmately 20 cm (use pi = 3.14)

    Water is drained from a vertical cylindrical tank by opening a value at the base of the tank. It is known that the rate at which the water level drops is proportional to the square root of water depth y, where the constant of proprortionality kgt0 depends on the acceliration due to gravity and the geomety of the hole. If is measured in minutes and k=(1)/(15) then the time of drain the tank, If the water is 4 m deep to start with is

    The shape of a heap of wheat is a right circular cone, the diameter of base of which is 9 metres and height is 3.5 metres. Find the volume of the heap of wheat. How much sq-metre of plastic sheet will be needed to cover that heap of wheat ? [Given that pi=3.14 and sqrt(130)=11.4 ].

    On the curved surface of the axis of a globe with the length of 14cm radius, two circular holes are made each of which has the length of radius 0.7cm. Find the area of metal sheet surrounding its curved surface.

    A joker's cap is in the form of right circular cone whose base radius is 7 cm and heights is 24 cm . Find the area of the sheet required to make 10 such caps.

    Find the time required for a cylindrical tank of radius 2.5 m and height 3 m to empty through a round hole of radius 2.5 cm with a velocity 2. 5sqrt(h) m/s, h being the depth of the water in the tank.

    on the curved surface of the axis of a globe with the length of 14 cm radius, two circular holes area made each of which has the length of radius 0.7 cm.Calculate the area of metal sheet surrounding its curved surface.