alleryA hemispherical dome has radius 7 cm. Its curved covering needs how much material? Use π = 22/7.
A308 cm²
B154 cm²
C462 cm²
D616 cm²
Answer & Solution
Correct answer: A. 308 cm²
A hemisphere’s curved area is 2πr² = 2 × (22/7) × 49 = 308 cm².
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