Find the surface area of a sphere with radius 3 cm. (Take π = 22/7)
A113.14 cm²CORRECT
B94.29 cm²
C84.86 cm²
D36 cm²
JAMB UTMEMathematics
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Why the answer is A, and why the others tempt you.
Surface area = 4πr² = 4 × (22/7) × 9 = 792/7 ≈ 113.14 cm².
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