Solved Questions ▸ ▸

__Question No. 51__

**If a right circular cone of height 24 cm has a volume of 1232 cm**

^{3}, then the area of its curved serface is :A. 154 cm^{2} |

B. 550 cm^{2} |

C. 704 cm^{2} |

D. 1254 cm^{2} |

**Check Answer**

__Question No. 52__

**The slant height of a conical mountain is 2.5 km and the area of its base is 1.54 km**

^{2}. The height of the mountain is :A. 2.2 km |

B. 2.4 km |

C. 3 km |

D. 3.11 km |

**Check Answer**

__Question No. 53__

**The radius and height of a right circular cone are in the ratio 3 : 4. If its volume is 96π cm**

^{3}, what is its slant height ?A. 8 cm |

B. 9 cm |

C. 10 cm |

D. 12 cm |

**Check Answer**

__Question No. 54__

**If the radius of the base and the height of a right circular cone are doubled, then its volume becomes :**

A. 2 times |

B. 3 times |

C. 4 times |

D. 8 times |

**Check Answer**

__Question No. 55__

**If both the radius and height of a right circular cone are increased by 20%, its volume will be increased by :**

A. 20% |

B. 40% |

C. 60% |

D. 72.8% |

**Check Answer**

__Question No. 56__

**If the height of a right circular cone is increased by 200% and the radius of the base is reduced by 50%, then the volume of the cone :**

A. remains unaltered |

B. decreases by 25% |

C. increases by 25% |

D. increases by 50% |

**Check Answer**

__Question No. 57__

**If the height of a cone be doubled and radius of base remains the same, then the ratio of the volume of the given cone to that of the second cone will be :**

A. 1 : 2 |

B. 2 : 1 |

C. 1 : 8 |

D. 8 : 1 |

**Check Answer**

__Question No. 58__

**The radii of two cones are in the ratio 2 : 1, their volumes are equal. Find the ratio of their heights.**

A. 1 : 8 |

B. 1 : 4 |

C. 2 : 1 |

D. 4 : 1 |

**Check Answer**

__Question No. 59__

**The volume of the largest right circular cone that can be cut out of a cube of edge 7 cm is :**

A. 13.6 cm^{3} |

B. 89.8 cm^{3} |

C. 121 cm^{3} |

D. 147.68 cm^{3} |

**Check Answer**

__Question No. 60__

**A cylinder with base radius of 8 cm and height of 2 cm is melted to form a cone of height 6 cm. The radius of the cone will be :**

A. 4 cm |

B. 5 cm |

C. 6 cm |

D. 8 cm |

**Check Answer**

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