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1. |
A solid brass sphere of radius 2.1 dm is converted into a right circular cylindrical rod of length 7cm. The ratio of total surface areas of the rod to the sphere is |
A. | 0.12569444444444 |
B. | 0.04375 |
C. | 0.29375 |
D. | 0.12986111111111 |
Answer» D. 0.12986111111111 | |