# IMO Level 1- Mathematics Olympiad (SOF) Class 6: Questions 638 - 639 of 1059

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## Question number: 638

MCQ▾

### Question

40 peoples having same height stand with both hands stretched all along the sides of a squared room, each student covering a length of 2.5 m. Then the perimeter of the room is

### Choices

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

a. | 10 km | |

b. | 150 m | |

c. | 1500 km | |

d. | 100 m |

## Question number: 639

MCQ▾

### Question

Find the area of unshaded part of the figure.

### Choices

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

a. | 78 sq. cm | |

b. | 52 sq. cm | |

c. | 68 sq. cm | |

d. | 45 sq. cm |