IMO Level 1- Mathematics Olympiad (SOF) Class 8: Questions 448 - 453 of 1030
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Question number: 448
Question
What is the ratio of the perimeter of the shaded region to the circumference of the circle?
A Circle with Center a is Given
Find out the ratio of the perimeter of the shaded region to the circumference of the circle
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Question number: 449
Question
The radius of the cylinder whose lateral surface area is 610 and height 6 cm, is________.
Choices
| Choice (4) | Response | |
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| a. | 11 cm |
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| b. | 12 cm |
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| c. | 14 cm |
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| d. | 10 cm |
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Question number: 450
Question
The perimeter of a trapezoid is 60 cm and its non-parallel sides are each equal to 13 cm and its altitude is 12 cm. Its area is________.
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Question number: 451
Question
The ratio of radii of two cylinders is 1: 3 and heights are in the ratio 3: 5. The ratio of their volume is________.
Choices
| Choice (4) | Response | |
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| a. | 1: 15 |
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| b. | 12: 3 |
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| c. | 1: 12 |
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| d. | 1: 14 |
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Question number: 452
Question
A metal sheet 49 cm long, 7 cm broad and 1 cm thick is melted into a cube. The difference between surface areas of two solids is________.
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Question number: 453
Question
A rectangle field has its length and breadth in the ratio 5: 3. Its area is 4.50 hectares. The cost of fencing it at Rs. 5 per meter is________.
Choices
| Choice (4) | Response | |
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| a. | Rs 4000 |
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| b. | Rs 4600 |
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| c. | Rs 4400 |
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| d. | Rs 4100 |
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