alleryਇੱਕ ਗੋਲ ਵਾਸ਼ਰ ਦਾ ਰੇਡੀਆਈ 7 cm ਅਤੇ 3.5 cm ਹੁੰਦਾ ਹੈ; ਇਸ ਦਾ ਧਾਤ ਖੇਤਰ? π = 22/7।
A154 cm²
B115.5 cm²
C192.5 cm²
D38.5 cm²
Answer & Solution
Correct answer: B. 115.5 cm²
ਧਾਤ ਦਾ ਖੇਤਰਫਲ (22/7) × (7² − 3.5²) = 115.5 cm² ਹੈ।
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