alleryಒಂದು ವೃತ್ತಾಕಾರದ ಉಂಗುರವು 21 cm ಮತ್ತು 14 cm ತ್ರಿಜ್ಯ ಹೊಂದಿರುವ ವೃತ್ತಗಳಿಂದ ಸುತ್ತುವರಿಯಲ್ಪಟ್ಟಿದೆ. ಅದರ ವಿಸ್ತೀರ್ಣವನ್ನು ಕಂಡುಹಿಡಿಯಿರಿ (pi = 22/7).
A1078 cm²
B770 cm²
C308 cm²
D462 cm²
Answer & Solution
Correct answer: B. 770 cm²
ಉಂಗುರದ ವಿಸ್ತೀರ್ಣ ಪೈ (21 ವರ್ಗ ಮೈನಸ್ 14 ವರ್ಗ) = (22/7)(245) = 770 ಚದರ ಸೆಂಟಿಮೀಟರ್ಗಳು.
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