# IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 465 - 471 of 1042

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## Question 465

### Question

MCQ▾The radius of the cylinder whose lateral surface area is 520 and height 5 cm, is________.

### Choices

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

a. | 12 cm | |

b. | 14 cm | |

c. | 17 cm | |

d. | 11 cm |

## Question 466

### Question

MCQ▾Surface area of a cube with edge = 1.2 cm is________.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 467

### Question

MCQ▾Three solid cubes of sides 1 cm, 6 cm and 8 cm are melted to form a new cube. Find the surface area of the cube so formed.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 468

### Question

MCQ▾The ratio of areas of two squares, one having triple its diagonals than the other is________.

### Choices

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

a. | 2: 3 | |

b. | 2: 9 | |

c. | 9: 1 | |

d. | 5: 3 |

## Question 469

### Question

MCQ▾The ratio of areas of two squares, one having double its diagonals than the other is________.

### Choices

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

a. | 4: 1 | |

b. | 9: 1 | |

c. | 2: 3 | |

d. | 2: 9 |

## Question 470

### Question

MCQ▾Three cubes whose edges are 1 cm, 6 cm, and 8 cm respectively are melted without any loss of metal into a single cube. The edge of new cube is________.

### Choices

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

a. | ||

b. | ||

c. | ||

d. |

## Question 471

### Question

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

### Choices

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

a. | ||

b. | ||

c. | ||

d. |