Home
Class 9
MATHS
A hollow spherical shell is made of a me...

A hollow spherical shell is made of a metal of density 4.5 g per `cm^(3)`. If its internal and external radii are 8 cm and 9 cm respectively, find the weight of the shell.

Text Solution

Verified by Experts

The correct Answer is:
4.092 kg
Weight of the shell `= [(4)/(3) xx (22)/(7) xx {(9)^(3) - (8)^(3)} xx (4.5)/(1000)] kg`
Promotional Banner

Topper's Solved these Questions

  • VOLUME AND SURFACE AREA OF SOLIDS

    RS AGGARWAL|Exercise Multiple Choice Questions (Mcq)|73 Videos

  • VOLUME AND SURFACE AREA OF SOLIDS

    RS AGGARWAL|Exercise Exercise 15C|21 Videos

  • TRIANGLES

    RS AGGARWAL|Exercise MULTIPLE-CHOICE QUESTIONS (MCQ)|10 Videos

Similar Questions

Explore conceptually related problems

A hollow spherical shell is made of metal of density 4.8 g/ cm^(3) , If its internal and external radii are 10 cm and 12 cm respectively, find the weight of the shell

A hollow spherical shell is made of metal density 4.5g percm'.If its external and innternal radii are 8cm and 9cm respectively, find the weight of the shell.

A hollow spherical shell is made up of a metal of density 3 g // cm^3 . If the internal and external radii are 5 cm and 6 cm respectively, then what is the mass of the shell? (Take pi = 22/7 )

Find the approximate volume of metal in a hollow spherical shell whose internal and external radii are 3 cm and 3.0005 cm, respectively.

find the approximate volume of metal in a hollow spherical shell whose internal and external radii are 3cm and 3.0005cm , respectively.

A hollow cylindrical pipe is made of iron. Its external and internal radii are 8 cm and 7 cm respectively and it is 35 cm long. If 1 cm^3 iron weight 8g, then the weight of the pipe is.

The volume of a spherical shell whose external and internal diameters are 14 cm and 10 cm respectively :

The length of a metallic pipe is 7.56 m. its external and internal radii are 2.5 cm and 1.5 cm respectively . If 1 cm ^(2) of the metal weight 7.5 g , then the weight of the pipe is : (Take pi = (22)/(7) )

RS AGGARWAL-VOLUME AND SURFACE AREA OF SOLIDS-Exercise 15D
  1. A metallic sphere of radius 10.5 cm is melted and then recast into sma...

    Text Solution

    |

  2. How many sphere 12 cm in diameter can be made from a metallic cylinder...

    Text Solution

    |

  3. The diameter of a sphere is 6 cm. It is melted and drawn into a wire o...

    Text Solution

    |

  4. The diameter of a copper sphere is 18 cm. It is melted and drawn into ...

    Text Solution

    |

  5. A sphere of diameter 15.6 cm is melted and cast into a right circular ...

    Text Solution

    |

  6. A spherical cannonball 28 cm in diameter is melted and cast into a rig...

    Text Solution

    |

  7. A spherical ball of radius 3 cm is melted and recast into the spherica...

    Text Solution

    |

  8. The radii of two spheres are in the ratio 1 : 2. Find the ratio of the...

    Text Solution

    |

  9. The surface areas of two spheres are in the ratio 1 : 4. Find the rati...

    Text Solution

    |

  10. A cylindrical tub of radius 12 cm contains water to a depth of 20 cm. ...

    Text Solution

    |

  11. A cylindrical bucket with base radius 15 cm is filled with water up to...

    Text Solution

    |

  12. The outer diameter of a spherical shell is 12 cm and its inner diamete...

    Text Solution

    |

  13. A hollow spherical shell is made of a metal of density 4.5 g per cm^(3...

    Text Solution

    |

  14. A hemisphere of lead of radius 9 cm is cast into a right circular cone...

    Text Solution

    |

  15. A hemispherical bowl of internal radius 9 cm contains a liquid. This l...

    Text Solution

    |

  16. a hemispherical bowl is made of steel 0.5 cm thick. The inside radius ...

    Text Solution

    |

  17. A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius...

    Text Solution

    |

  18. A hemispherical bowl made of brass has inner diameter 10.5 cm. Find th...

    Text Solution

    |

  19. The diameter of the moon is approximately one fourth of the diamete...

    Text Solution

    |

  20. Volume and surface area of a solid hemisphere are numerically equal. W...

    Text Solution

    |