Mensurationmedium · Past Paper
If the surface area of a sphere is 616 cm², find its radius.
A7 cm
B14 cm
C3.5 cm
D21 cm
✓ Correct Answer: A — 7 cm
4πr² = 616 => 4 * (22/7) * r² = 616 => r² = 49 => r = 7 cm.
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