Home
Class 9
MATHS
A hemispherical bowl is to be painted fr...

A hemispherical bowl is to be painted from inside at the rate of Rs. 20 per `100m^(2)`. The total cost of painting is Rs. 30.80. find
(i) Inner surface area of the bowl.
(ii) Volume of air inside the bowl.

Text Solution

Verified by Experts

The correct Answer is:
(i) `154m^(2)`
(ii) `251.5m^(3)`
Promotional Banner

Topper's Solved these Questions

  • SURFACE AREAS AND VOLUMES

    CBSE COMPLEMENTARY MATERIAL|Exercise Practice Test|8 Videos

  • SURFACE AREAS AND VOLUMES

    CBSE COMPLEMENTARY MATERIAL|Exercise PART-C|12 Videos

  • STATISTICS

    CBSE COMPLEMENTARY MATERIAL|Exercise PRACTICE TEST|5 Videos

  • TRIANGLES

    CBSE COMPLEMENTARY MATERIAL|Exercise PRACTICE TEST|8 Videos

Similar Questions

Explore conceptually related problems

A dome of a building is in the form of a hemisphere. From inside, it was white-washed at the cost of Rs. 498.96. If the cost of white washing is Rs. 2.00 per square metre, find the (i) inside surface area of the dome. (ii) volume of the air inside the dome.

A dome of a building is in the form of a hemisphere.From inside,it was white-washed at the cost of Rs 498.96. If the cost of white- washing is Rs 2.00 per square metre,find the (i) inside surface area of the dome,(ii) volume of the air inside the dome.

A dome of a building is in the form of a hemisphere.From inside,it was white-washed at the cost of Rs.498.96. If the cost of white- washing is Rs.2.00 per square metre,find the inside surface area of the dome and volume of the air inside the dome.

A hemispherical bowl has 3.5 cm radius. It is to be painted inside as well as outside. The cost of painting it at the rate of Rs. 5 per 10 sq. cm will be :

Find the cost of painting at the rate of Rs. 5.60 per m^(2) on the hemispherical dome of diameter 10 m.

A hemispherical bowl has inner diameter 11.2cm. Find the volume of milk it can hold.

The curved surface area of a 16m deep cylinder is plastered with concrete at the rate of Rs.15 per m^(2). IF the total cost of plastering the surface is Rs 5280, find the capacity of the cylinder.

Find the total surface area of a hemispherical bowl of radius 5cm

A rhombus-shaped sheet with perimerter 40 cm and on e diagonal 12 cm, is painted on both sides at the rate of Rs. 5 per cm^(2) . Find the cost of painting.

A hemispherical bowls has 3.5cm radius. It is to be painted inside as well as outside. The cost of painting it at the rate of Rs 5 per 10sq. cm will be (a) Rs 77 (b) Rs 100 (c) Rs 175 (d) Rs 50

CBSE COMPLEMENTARY MATERIAL-SURFACE AREAS AND VOLUMES-PART-D
  1. A cylinder is within the cube touching all the vertical faces. A co...

    Text Solution

    |

  2. A plot of land in the form of a rectangle has a dimension 240 m\ x\...

    Text Solution

    |

  3. A residential colony has a population of 5400 and 60 litres of water i...

    Text Solution

    |

  4. 50 students of class IX planned a visit to an old age home and to spen...

    Text Solution

    |

  5. Rahul wanted to make a temporary shelter for street dogs, by making a ...

    Text Solution

    |

  6. Twenty seven solid iron spheres, each of radius r and surface area ...

    Text Solution

    |

  7. The diameter of a metallic ball is 4.2 cm. What is the mass of the ba...

    Text Solution

    |

  8. A lead pencil consists of a cylinder of wood with a solid cylinder ...

    Text Solution

    |

  9. A soft drink is available in two packs (i) a tin can with a rectan...

    Text Solution

    |

  10. A bus stop is barricaded from the remaining part of the road, by us...

    Text Solution

    |

  11. A sphere of diameter 6 cm is dropped in a right circular cylindrica...

    Text Solution

    |

  12. Mearbles of diameter 1.4 cm are dropped into a cylindrical beaker of d...

    Text Solution

    |

  13. A toy is in the form of a cone mounted a hemisphere of diameter 7 cm. ...

    Text Solution

    |

  14. If h , c ,V are respectively the height, the curved surface and the...

    Text Solution

    |

  15. A wooden box with dimensions 36cmxx24cmxx12 cm is 2cm thick. Find the ...

    Text Solution

    |

  16. A rectangular reservoir is 120 ma n d75 mw i d edot At what speed per ...

    Text Solution

    |

  17. A hemispherical bowl is to be painted from inside at the rate of Rs. 2...

    Text Solution

    |

  18. If volume of two spheres are in the ratio 64: 27, then the ration of...

    Text Solution

    |

  19. A cube of side 4cm contains a sphere touching its side. Find the vo...

    Text Solution

    |

  20. A sphere and a right circule cylinder of the same radius have equal v...

    Text Solution

    |