Q:

A) 66 cm | B) 88 cm |

C) 80 cm | D) 72 cm |

Answer:

Explanation:

Explanation:

Let length and breadth of rectangle be L cm

and B cm respectively So, ATQ

Area1= (L-6)×B

But this is square, so L-6=B

Area1= (L-6) × (L-6)

Case 2, Area2= L × (B+6),

L=B+6

So, Area2= L × L,

Given, Area2-Area1= 252(L)2-(L-6)2=252

Solving this, L= 24

B= 18

Perimeter= 2(L+B)= 2(24+18)= 84 cm

0
45

1
417

Q:

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

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

1
378

Q:

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

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

0
348

Q:

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

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

1
416

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
432

0
462

1
493