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1. |
A solid rubber sphere weighs 6kg when its diameter is 6cm. Using the same material, a hollow sphere is made with outer diameter 18cm and inner diameter 12 cm. What is its weight? |
A. | 114 kg |
B. | 96 kg |
C. | 72.64 kg |
D. | 64 kg |
Answer» B. 96 kg | |