A sphere has a diameter of \(14\ cm\). Calculate its surface area. \((\pi = \frac{22}{7})\)
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Correct Option:
D
\[Surface\ area\ of\ a\ sphere = 4\pi r^{2}\]
\[diameter = 14cm\ \therefore radius = 7cm\ \]
\(Surface\ area\ of\ a\ sphere = 4 \times \frac{22}{7} \times \frac{7^{2}}{1} = 616cm^{2}\)