A sphere has a diameter of 14 cm Calculate its ... - SS3 Mathematics Surface Area And Volume Of Spheres Question
A sphere has a diameter of \(14\ cm\). Calculate its surface area. \((\pi = \frac{22}{7})\)
A
\(540cm^{2}\)
B
\(440cm^{2}\)
C
\(610cm^{2}\)
D
\(616cm^{2}\)
correct option: d
\[Surface\ area\ of\ a\ sphere = 4\pi r^{2}\]
\[diameter = 14cm\ \therefore radius = 7cm\ \]
\(Surface\ area\ of\ a\ sphere = 4 \times \frac{22}{7} \times \frac{7^{2}}{1} = 616cm^{2}\)
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