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1. |
A solid metallic sphere of radius x cm is melted and then drawn into 126 cones each of radius 3.5 cm and height 3 cm. There is no wastage of material in this process. What is the value of x? |
A. | 7 |
B. | 3.5 |
C. | 21 |
D. | 10.5 |
E. | none of these |
Answer» E. none of these | |