Question : The surface area of a sphere is 2464 cm². Find the radius of the sphere. [Use $\pi=\frac{22}{7}$ ]
Option 1: 14 cm
Option 2: 28 cm
Option 3: 42 cm
Option 4: 40 cm
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Correct Answer: 14 cm
Solution : According to the question Surface area of a sphere = 4πr 2 ⇒ 2464 = 4 × $\frac{22}{7}$ × r 2 ⇒ r 2 = $\frac{2464 ×7}{4×22}$ = 196 ⇒ r = $\sqrt{196}$ = 14 Hence, the correct is 14 cm
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Question : The radius of a sphere is 14 cm. What is the surface area of this sphere? [Use $\pi=\frac{22}{7}$]
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