Mensurationmedium · Past Paper
Find the curved surface area of a hemisphere with diameter 21 cm.
A693 cm²
B1386 cm²
C346.5 cm²
D1039.5 cm²
✓ Correct Answer: A — 693 cm²
r = 10.5 cm. CSA = 2πr² = 2 * (22/7) * 10.5 * 10.5 = 693 cm².
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