# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 449 - 456 of 931

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## Question 449

### Question

MCQ▾The and are right angles. If , and , then the length of XZ is ________

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |

## Question 450

### Question

MCQ▾If the point (5,7) lies on the graph of the equation , find the value of a.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 7 | |

b. | 8 | |

c. | 9 | |

d. | 6 |

## Question 451

### Question

MCQ▾A rectangular field has its length and breadth in the ratio . Its area is 0.9 hectares. The cost of fencing it at ₹ . 10 per meter is ________

### Choices

Choice (4) | Response | |
---|---|---|

a. | ₹ 5200 | |

b. | ₹ 6200 | |

c. | ₹ 4200 | |

d. | ₹ 7400 |

## Question 452

### Question

MCQ▾In the figure , and . Then x equals ________

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |

## Question 453

### Question

MCQ▾If AD, BE and CF are the medians of a triangle ABC, then = ________.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 2 | |

b. | 1 | |

c. | 3 | |

d. | 0 |

## Question 454

### Question

MCQ▾The edge of a cube is 25 cm. how many small cubes of 5 cm edge can be formed from this cube?

### Choices

Choice (4) | Response | |
---|---|---|

a. | 125 | |

b. | 148 | |

c. | 180 | |

d. | 164 |

## Question 455

### Question

MCQ▾The points in which abscissa and ordinate have same sign will lie in

### Choices

Choice (4) | Response | |
---|---|---|

a. | ||

b. | ||

c. | ||

d. |

## Question 456

### Question

MCQ▾A covered wooden box has the inner measures as 95 cm, 120 cm, 30 cm and the thickness of wood is 7 cm. then the volume of the wood is________

### Choices

Choice (4) | Response | |
---|---|---|

a. | 3,66, 400 cu. Cm | |

b. | 3,64, 000 cu. Cm | |

c. | 3,00, 664 cu. Cm | |

d. | 6,64, 000 cu. Cm |