Home
Class 14
MATHS
A right circular cone is 3.6 cm high and...

A right circular cone is 3.6 cm high and radius of its base is 1.6 cm. It is melted and recast into a right circular cone with radius of its base as 1.2 cm. Then the height of the cone {in cm) is-
एक लंब-वृत्तीय शंकु की ऊँचाई 3.6 सेमी ओर उसके आधार की त्रिज्या 1.6 सेमी है। उसको पिघला कर उसे 1.2 सेमी आधार त्रिज्या वाले लंब-वृत्तीय शंकु में ढाला गया है। तदनुसार, उस नए शंकु कौ ऊँचाई कितने सेमी होगी?

A

3.6

B

4.8

C

6.4

D

7.2

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MENSURATION

    KIRAN PUBLICATION|Exercise Test Yourself|28 Videos
  • MENSURATION

    KIRAN PUBLICATION|Exercise TYPE VI|47 Videos
  • LCM AND HCF

    KIRAN PUBLICATION|Exercise Test Yourself |18 Videos
  • MISCELLANEOUS

    KIRAN PUBLICATION|Exercise TYPE-VI|15 Videos

Similar Questions

Explore conceptually related problems

A right circular cone is 3.6 cm high and radius of its base is 1.6 cm. It is melted and recast into a right circular cone with radius of its base as 1.2 cm. Find its height.

A right circular cone is 3.6cm high and radius of its base is 1.6cm .It is melted and recast into a right circular cone with radius of its base as 1.2cm. Find its height.

A right circular cone is 5.4cm high and radius of its base is 2cm. It is melted and recast into another right circular one with radius of base as 1.5 cm. find the height of new cone formed.

A cone is 8.4 cm heigh and the radius of its base is 2.1 cm. It is melted and recast into a sphere. The radius of the sphere is

A right circular cone is 8 cm high and radius of its base is 2 cm .The cone is metted and recaset in to a sphere. Determine the diameter of the sphere.

A solid metalic hemisphere of radius 8 cm is melted and recast into a right circular cone of base radius 6 cm. Determine the height of the cone.

A solid metallic hemisphere of radius 8 cm is melted and recasted into a right circular cone of base radius 6 cm. Determine the height of the cone.

A sphere of diameter 12.6 cm is melted and cast into a right circular cone of height 25.2 cm. The radius of the base of the cone is

A metallic sphere of radius 7 cm is melted and recast in to right circular cone of same radius. Find the height of the cone.

A solid metallic spherical ball of diameter 6 cm is melted and recast into a cone with diameter of the base as 12 cm. The height of the cone is

KIRAN PUBLICATION-MENSURATION-TYPE VII
  1. The diameter of the base of a right circular cone is 4 cm and its heig...

    Text Solution

    |

  2. A sector is formed by opening out a cone of base radius 8 cm and heigh...

    Text Solution

    |

  3. A right circular cone is 3.6 cm high and radius of its base is 1.6 cm....

    Text Solution

    |

  4. A copper sphere of radius 3 cm is beaten and drawn into a wire of diam...

    Text Solution

    |

  5. If surface area and volume of a sphere are S and V respectively, then ...

    Text Solution

    |

  6. Assume that a drop of water is shperical and its diameter is one-tenth...

    Text Solution

    |

  7. A cistern of capacity 8000 litres measures externally 3.3 m by 2.6 m b...

    Text Solution

    |

  8. A cone is cut at mid point of its height by a frustum parallel to its ...

    Text Solution

    |

  9. The area of a circle of radius 5 is numerically what percent of its ci...

    Text Solution

    |

  10. If the circumference and area of a circle are numerically equal, then ...

    Text Solution

    |

  11. A chord of length 30 cm is at a distance of 8 cm from the centre of a ...

    Text Solution

    |

  12. The circum-radius of an equilateral triangle is 8 cm. The in-radius of...

    Text Solution

    |

  13. A circle is inscribed in a square. An equilateral triangle of side 4sq...

    Text Solution

    |

  14. The height of an equilateral triangle is 4sqrt(3) cm. The ratio of the...

    Text Solution

    |

  15. A circle is inscribed in a square whose length of the diagonal is 12sq...

    Text Solution

    |

  16. The radius of the incircle of a triangle whose sides are 9 cm, 12 cm a...

    Text Solution

    |

  17. What is the ratio between the inradius and the circumradius of a squar...

    Text Solution

    |

  18. The perimeter of a rectangle and a square are 160 m each. The area of ...

    Text Solution

    |

  19. The volume of a right circular cylinder and that of a sphere are equal...

    Text Solution

    |

  20. A solid cone of height 9 cm with diameter of its base 18 cm is cut out...

    Text Solution

    |