# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 471 - 476 of 1042

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## Question 471

### Question

MCQ▾What is the ratio of the perimeter of the shaded region to the circumference of the circle?

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Choice (4) | Response | |
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d. |

## Question 472

### Question

MCQ▾A quadrilateral whose one diagonal is 4 cm. If the length of altitudes from opposite vertices on the diagonal is 2.5 cm and 1.5 cm, then the area of quadrilateral is ________.

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Choice (4) | Response | |
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d. |

## Question 473

### Question

MCQ▾The number of surfaces in right circular cylinder is________.

### Choices

Choice (4) | Response | |
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a. | 1 | |

b. | 2 | |

c. | 3 | |

d. | 4 |

## Question 474

### Question

MCQ▾If the area of a cylinder with radius r = 1 and height h = 2 is equal to area of a cone with radius r = 1 and height h, the height of the cone is________.

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## Question 475

### Question

MCQ▾A quadrilateral whose one diagonal is 5.5 cm. If the length of altitudes from opposite vertices on the diagonal is 2.5 cm and 3.5 cm, then the area of quadrilateral is ________.

### Choices

Choice (4) | Response | |
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d. |

## Question 476

### Question

MCQ▾ABC is a right-angled triangle with. AH is drawn perpendicular to BC where H lies on BC. If AB = 30 cm and AC = 50 cm, then BH = ________.

### Choices

Choice (4) | Response | |
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a. | 50 | |

b. | 40 | |

c. | 42 | |

d. | 25 |