Home
Class 9
MATHS
A hemispherical bowl is made of steel, 0...

A hemispherical bowl is made of steel, 0.25 cm thick. The inner radius of the bowl is 5 cm. Find the outer curved surface area of the bowl.

Text Solution

Verified by Experts


`r=5cm`
thickness of steel sheet `=0.25cm`
`R=5+.25=5.25cm`
outer curved surface area of the bowl`=2piR^2=2xx22/7xx525/100xx525/100 cm^2=173.25cm^2`
Promotional Banner

Topper's Solved these Questions

  • SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER CONE

    RD SHARMA|Exercise All Questions|128 Videos

  • TABULAR REPRESENTATION OF STATISTICAL DATA

    RD SHARMA|Exercise All Questions|62 Videos

Similar Questions

Explore conceptually related problems

A hemispherical bowl is made of steel,0.25cm thick.The inner radius of the bowl is 5cm. Find the outer curved surface area of the bowl.

A hemispherical bowl is made of steel 0.5cm thick.The inside radius of the bowl is 4cm. find volume of steel

A hemispherical bowl is made of steel, 0.5 cm thick. The inside radius of the bowl is 4 cm. Find the volume of steel used in making the bowl.

a hemispherical bowl is made of steel 0.5 cm thick. The inside radius of the bowl is 4 cm. Find the volume of steel used in making the bowl.

The radius of a hemisphere is 2.5 cm. Find its total surface area.

A hollow hemispherical bowl of thickness 1 cm has an inner radius of 6 cm. Find the volume of metal required to make the bowl.

A metallic pipe is 0.7cm thick.Inner radius of the pipe is 3.5cm and length is 5dm. Find its total surface area.

What is the work done in upturning a thin hemispherical bowl as shown in the figure. The mass of the bowl is M and the radius of the bowl is R.

The coefficient of friction between a hemispherical bowl and an insect is sqrt(0.44) and the radius of the bowl is 0.6m . The maximum height to which an insect can crawl in the bowl will be .

RD SHARMA-SURFACE AREA AND VOLUME OF A SPHERE -All Questions
  1. Find the volume of a sphere whose diameter is: 14cm        (ii)  3...

    Text Solution

    |

  2. A hemispherical tank has inner radius of 2.8m. Find its capacity in ...

    Text Solution

    |

  3. A hemispherical bowl is made of steel, 0.25 cm thick. The inner radi...

    Text Solution

    |

  4. How many bullets can be made out of a cube of lead whose edge measur...

    Text Solution

    |

  5. A shopkeeper has one laddoo of radius 5cm. With the same material,...

    Text Solution

    |

  6. A spherical ball of lead 3cm in diameter is melted and recast into t...

    Text Solution

    |

  7. A sphere of radius 5cm is immersed in water filled in a cylinder, th...

    Text Solution

    |

  8. If the radius of a sphere is doubled, what is the ratio of the volum...

    Text Solution

    |

  9. A cone and a hemisphere have equal bases and equal volumes. The ratio ...

    Text Solution

    |

  10. A vessel in the form of a hemisphereical bowl is full of water. The ...

    Text Solution

    |

  11. A cylinder whose height is two thirds of its diameter, has the same ...

    Text Solution

    |

  12. A vessel in the form of a hemisphereical bowl is full of water. The ...

    Text Solution

    |

  13. A cylindrical tub of radius 16cm contains water to a depth of 30cm. ...

    Text Solution

    |

  14. A cylinder of radius 12cm contains water to a depth of 20cm. A spher...

    Text Solution

    |

  15. The diameter of a copper sphere is 18 cm. The sphere is melted and i...

    Text Solution

    |

  16. A cylindrical jar of radius 6 cm contains oil. Iron spheres each of ...

    Text Solution

    |

  17. A measuring jar of internal diameter 10cm is partially filled with w...

    Text Solution

    |

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

    Text Solution

    |

  19. The radius of the internal and external surface of a hollow spherical ...

    Text Solution

    |

  20. A hemisphere of lead of radius 7 cm is cast into a right circular co...

    Text Solution

    |