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1. |
Circle \[{{C}_{2}}\] passes through the centre of circle \[{{C}_{1}}\]and is tangential to it. If the area of \[{{C}_{1}}\]is \[4\text{ }c{{m}^{2}},\] then the area of \[{{C}_{2}}\] is _____. |
A. | \[8\,c{{m}^{2}}\] |
B. | \[8\,\sqrt{\pi \,}c{{m}^{2}}\] |
C. | \[16\,c{{m}^{2}}\] |
D. | \[16\sqrt{\pi }\,c{{m}^{2}}\] |
Answer» D. \[16\sqrt{\pi }\,c{{m}^{2}}\] | |