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
Answer (1)
13th Jan, 2024
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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