Q:

A) 2:9 | B) 3:9 |

C) 1:9 | D) 4:9 |

Answer: C) 1:9

Explanation:

Explanation:

Let their edges be a and b. Then,

a3/b3 = 1/27 (or) (a/b)3 = (1/3)3 (or) (a/b) = (1/3).

\Ratio of their surface area = 6a2/6b2 = a2/b2 = (a/b)2 = 1/9, i.e. 1:9.

Q:

A) Only conclusion I follows | B) Only conclusion II follows |

C) Both conclusions I and II follow | D) Neither conclusion I nor conclusion II follows |

0
543

0
1000

1
1267

Q:

A) 13x3 + 92x2 - 55x + 4 | B) 13x3 - 92x2 - 55x - 4 |

C) 13x3 + 92x2 + 55x - 4 | D) 13x3 - 92x2 + 55x + 4 |

1
1159

Q:

A) 253.17 cubic cms | B) 228.84 cubic cms |

C) 143.26 cubic cms | D) 257.68 cubic cms |

0
861

Q:

A) (2,4) | B) (-2,-4) |

C) (2,-4) | D) (-2,4) |

1
1053

Q:

A) increased in the ratio 55:63 | B) decreased in the ratio 63:55 |

C) increased in the ratio 45:77 | D) decreased in the ratio 77:45 |

0
945

0
1044