# IMO Level 1- Mathematics Olympiad (SOF) Class 9: Questions 415 - 421 of 931

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## Question 415

### Question

MCQ▾The area of an isosceles triangle having base x cm and one side y cm is________

### Choices

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

b. | ||

c. | ||

d. |

## Question 416

### Question

MCQ▾Which of the points A (0,6), B (-2,4), C (-4,0), D (0, -2), E (0, -5), F (4, -4) do lie on the Quadrant 1 and 4?

### Choices

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

a. | Q, R, W, U and T | |

b. | P, S, W, U and R | |

c. | P, R, T, U and X | |

d. | Q, R, T, V and X |

## Question 417

### Question

MCQ▾If the height of cone is thrice, then its volume is increased by________.

### Choices

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

b. | ||

c. | ||

d. |

## Question 418

### Question

MCQ▾The altitude drawn to the base of an isosceles triangle is of length 6 cm and the perimeter is 72 cm. the area of the triangle is ________

### Choices

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

b. | ||

c. | ||

d. |

## Question 419

### Question

MCQ▾A rectangular field has its length and breadth in the ratio. Its area is 10.29 hectares. The cost of fencing it at RS. 8 per meter is ________

### Choices

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

a. | Rs. 21500 | |

b. | Rs. 15400 | |

c. | Rs. 14200 | |

d. | Rs. 11200 |

## Question 420

### Question

MCQ▾The volume of the largest circular cone that can be cut of a cube whose edge is 16 cm is ________

### Choices

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

b. | ||

c. | ||

d. |