alleryవృత్తాకార వాషర్లో రేడి 7 cm మరియు 3.5 cm; దాని మెటల్ ప్రాంతం? π = 22/7.
A154 cm²
B115.5 cm²
C192.5 cm²
D38.5 cm²
Answer & Solution
Correct answer: B. 115.5 cm²
మెటల్ ప్రాంతం:
(22/7) × (7² - 3.5²) = 115.5 cm²
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