alleryایک سرکلر واشر کا radii 7 cm اور 3.5 cm ہوتا ہے۔ اس کا دھاتی علاقہ؟ π = 22/7۔
A154 cm²
B115.5 cm²
C192.5 cm²
D38.5 cm²
Answer & Solution
Correct answer: B. 115.5 cm²
دھات کا رقبہ (22/7) × (7² − 3.5²) = 115.5 cm² ہے۔
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