Cube and Cube Roots (IMO- Mathematics Olympiad Class 8): Questions 34 - 41 of 58
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Question number: 34
» Cube and Cube Roots
Question
The smallest number by which 225 must be multiplied so that the product is a perfect cube is________.
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| Choice (4) | Response | |
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| a. | 15 |
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| b. | 9 |
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| c. | 10 |
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| d. | 11 |
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Question number: 35
» Cube and Cube Roots
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The volume of a cube whose surface area is , is________.
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Question number: 36
» Cube and Cube Roots
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If , then is equal to________.
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Question number: 37
» Cube and Cube Roots
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Question number: 38
» Cube and Cube Roots
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If , then is equal to________.
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Question number: 39
» Cube and Cube Roots
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By what least number must 3125 be multiplied to make it perfect cube?
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| Choice (4) | Response | |
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| a. | 10 |
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| b. | 25 |
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| c. | 5 |
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| d. | 4 |
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Question number: 40
» Cube and Cube Roots
Question
Three numbers are in the ratio of 1: 2: 3. The sum of their cubes is 98784. The numbers are________.
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| Choice (4) | Response | |
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| b. | 10: 11: 12 |
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| c. | 15: 30: 45 |
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| d. | 6: 12: 18 |
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Question number: 41
» Cube and Cube Roots
Question
The value of is ________.
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| Choice (4) | Response | |
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| a. | 6 |
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| b. | 4 |
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| c. | 8 |
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| d. | 5 |
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