alleryತ್ರಿಜ್ಯದ ವೃತ್ತಾಕಾರದ ವಲಯವು 21 cm ಪರಿಧಿಯನ್ನು ಹೊಂದಿದೆ 86 cm. ಅದರ ಪ್ರದೇಶವನ್ನು ಕಂಡುಹಿಡಿಯಿರಿ; π = 22/7 ಬಳಸಿ.
A462 cm²
B231 cm²
C693 cm²
D924 cm²
Answer & Solution
Correct answer: A. 462 cm²
ಆರ್ಕ್ 86−2×21 = 44 cm, ಕೋನ 44/132×360° =120°;
ಪ್ರದೇಶ 120/360×(22/7)×21² =462 cm²
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