Home
Class 14
MATHS
How many cubic metres of earth must be ...

How many cubic metres of earth must be dug to make a well 14 m deep and 4m in diameter ?

Text Solution

Verified by Experts

Earth to be dugout from the well
= volume of the cylindrical well = `pi r^2h = (22)/7 xx 2 xx2 xx14`
=`176 m^3`
Promotional Banner

Topper's Solved these Questions

  • LOGARITHM

    QUANTUM CAT|Exercise QUESTION BANK|159 Videos

  • NUMBER SYSTEM

    QUANTUM CAT|Exercise QUESTION BANK|1091 Videos

Similar Questions

Explore conceptually related problems

How many cubic metres of earth must be dug-out to sink a well 21m deep and 6m diameter?

How many cubic metres of earth must be dogout to sink a well 21 m deep and 6m diameter? Find the cost of plastering the inner surface of the well of Rs.9.50 per m^(2)

How many cubic metres of earth must be dug to construct a well 7 m deep and of diameter 2.8 m?

How many cubic metres of earth must be dug out to sink a well 22.5m deep and of diameter 7m? Also,find the cost of plastering the inner curved surface at Rs.3 per square metre.

How many cubic meters of earth must be dug out to sinc a well 20m deep and has a diameter of 7m ? If the earth so dug out spread over a rectangular plot of 25m by 11m, What is height of the platform so formed?

How many cubic metres of earth must be dug out to sink a well 14 m deep and having a radius of 4 m. If the earth taken out is spread over a plot of dimension (25 m xx 16 m) . What is the height of the plateform so formed?

How many cubic metres of earth must be dug to sink a wll which is 16 m deep and which has a radius of 3.5 m? If the earth taken out is spread over a rectangular plot of dimensions 25mxx16m , what is the height of the platform so formed?

How many cubic metres of earth must be dug to construct a 7 m deep wel and diametrt is 2 m ?

How many cubic metre of earth is to be dug out to dig a well of radius 1.4m and depth 5m ?

What will be the cost to plaster the inner surface of a well 14 m deep and 4 m in diameter at the rate of Rs. 25 per square meter ?

QUANTUM CAT-MENSURATION-QUESTION BANK
  1. The base radius of a cylinder is 14 cm and its height is 30 cm. Find :...

    Text Solution

    |

  2. The base radius of a cylinder is 14 cm and its heights is 30 cm. Fin...

    Text Solution

    |

  3. How many cubic metres of earth must be dug to make a well 14 m deep a...

    Text Solution

    |

  4. A hollow cylindrical tube open at both end is made of iron 2 cm thick....

    Text Solution

    |

  5. A well with 14m diameter is dug 8m deep. The earth taken out of it ...

    Text Solution

    |

  6. A cylindrical cirstern whose diameter is 21 cm is party filled with wa...

    Text Solution

    |

  7. If the radius of cylinder is doubled, but height is reduced by 50% . W...

    Text Solution

    |

  8. The radius of the base of a right cone is 35 cm and its height is 84 c...

    Text Solution

    |

  9. The radius of the base of a right cone is 35 cm and its height is 84 c...

    Text Solution

    |

  10. The radius of the base of a right cone is 35 cm and its height is 84 c...

    Text Solution

    |

  11. The radius of the base of a right cone is 35 cm and its height is 84 c...

    Text Solution

    |

  12. Find the area of the iron sheet required to prepare a cone 20 cm high ...

    Text Solution

    |

  13. A solid metallic cylinder of base radius 3 cm and height 5 cm is melte...

    Text Solution

    |

  14. How many cubic metres of water fill a pipe which is 3500 m long and 0....

    Text Solution

    |

  15. A cube of metal , whose edge is 10 cm, is wholly immersed in water con...

    Text Solution

    |

  16. Find the height of the cylinder whose volume is 511 m^3 and the area ...

    Text Solution

    |

  17. The lateral surface area of a cylinder is 1056 cm^(2) and its height ...

    Text Solution

    |

  18. There is cubical block of wood of side 2 cm. If the cylinder of the ...

    Text Solution

    |

  19. The amount of concrete required to build a cylindrical pillar whose ba...

    Text Solution

    |

  20. If the diameter of the base of a closed right circular cylinder be ...

    Text Solution

    |