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| from: category_eng |
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| 1. B | |
| 2. D | |
| radius! | |
| 3. D | |
| You can use the geometric ratio also because of the similarity | |
| 4. C | |
| same three faces... three area is given, (1)xy=15 and yz=24 (2)xz=40 | |
| 5. d | |
| 6. B | |
| 7. b | |
| 8. | |
| see last digit | |
| 9. E |
Understanding |
| radius | |