Home
Class 9
MATHS
Find the cost of sinking a tubewell 2...

Find the cost of sinking a tubewell 280m deep, having diameter 3m at the rate of Rs. 3.60 per cubic metre. Find also the cost of cementing its inner curved surface at Rs. 2.50 per square metre.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • SURFACE AREA AND VOLUME OF A CUBOID AND CUBE

    RD SHARMA ENGLISH|Exercise All Questions|168 Videos
  • SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER CONE

    RD SHARMA ENGLISH|Exercise All Questions|129 Videos

Similar Questions

Explore conceptually related problems

The inner diameter of a circular well is 3.5m. It is 10m deep. Find the cost of plastering its inner curved surface at Rs. 4 per square metre.

Find the cost of levelling a field measuring 75 m by 60 m at the rate of Rs 8 per sq. m .

Find the cost of fencing a rectangular park of length 250 m andbreadth 175 m at the rate of Rs 12 per metre.

The area of a square field is 64 hectares .Find the cost of fencing it with wire at Rs. 21.50 per metre .

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 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.

One side of a square plot is 250m, find the cost of levelling it at the rate of Rs. 2 per square metre.

One side of a square field is 179 m. Find the cost of raising a lawn on the field at the rate of Rs 1.50 per square metre.

One side of a square plot is 300m. Find its area. Also, find the cost of levelling it, if the rate for levelling is Rs. 0.50 per square metre.

Find the cost of fencing a triangular garden with sides 20m, 24 m and 32 m at the rate of 142 per metre.

RD SHARMA ENGLISH-SURFACE AREA AND VOLUME OF A RIGHT CIRCULAR CYLINDER-All Questions
  1. How many litres of water flow out of a pipe having an area of cross...

    Text Solution

    |

  2. The sum of the radius of the base and height of a solid cylinder is...

    Text Solution

    |

  3. Find the cost of sinking a tubewell 280m deep, having diameter 3...

    Text Solution

    |

  4. Find the length of 13.2 kg of copper wire of diameter 4mm, when 1 c...

    Text Solution

    |

  5. A well with 10m inside diameter is dug 8.4m deep. Earth taken out o...

    Text Solution

    |

  6. Write the number of surfaces of right circular cylinder

    Text Solution

    |

  7. Write the ratio of total surface area to the surface area of a cyli...

    Text Solution

    |

  8. The ratio between the radius of the base of height of a cylinder...

    Text Solution

    |

  9. If the radii of two cylinders are in the ratio 2:3 and their height...

    Text Solution

    |

  10. In a cylinder, if radius is doubled and height is halved, curved sur...

    Text Solution

    |

  11. Two cylindrical jars have their diameters in the ratio 3:1, but heig...

    Text Solution

    |

  12. The number of surfaces in right cylinder is (a) 1          (b)  2  ...

    Text Solution

    |

  13. Vertical cross-section of a right circular cylinder is always a (a)...

    Text Solution

    |

  14. If r is the radius and h is height of the cylinder the volume will...

    Text Solution

    |

  15. The number of surfaces of a hollow cylindrical object is (a) 1      ...

    Text Solution

    |

  16. If the radius of a cylinder is doubled and the height remains same, ...

    Text Solution

    |

  17. If the height of a cylinder is doubled and radius remains the same, ...

    Text Solution

    |

  18. In a cylinder, if radius is halved and height is doubled, the volum...

    Text Solution

    |

  19. If the height of a cylinder is doubled, by what number must the radi...

    Text Solution

    |

  20. The volume of a cylinder of radius r is 1/4 of the volume of a rec...

    Text Solution

    |