Mensurationeasy · Past Paper
The radius of a sphere is 21 cm. Find its surface area.
A5544 cm²
B1386 cm²
C2772 cm²
D441 cm²
✓ Correct Answer: A — 5544 cm²
Area = 4πr² = 4 * (22/7) * 21 * 21 = 88 * 63 = 5544 cm².
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