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1. |
A cone has height which is half of 16.8 cm, while diameter of its base is 4.2 cm. It is melted and recast into a sphere. Find the surface area of the sphere. ? |
A. | 55.44 sq cm |
B. | 60 sq cm |
C. | 65.58 sq cm |
D. | 59 sq cm |
Answer» B. 60 sq cm | |