RRB NTPC · Question 115
The surface area (in sq. cm) of a sphere with radius 2 cm is: \(\left(\text{Take} \ \pi = \dfrac{22}{7}\right)\)
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Answer: (A) 352/7
Explanation
Surface area = 4πr² = 4 × 22/7 × 4 = 352/7 sq cm.
RRB NTPC · Question 115
Answer: (A) 352/7
Surface area = 4πr² = 4 × 22/7 × 4 = 352/7 sq cm.