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If radius is (14) cm and central angle is ( \frac{5\pi}{7} ) radians, what is the area of the sector?त्रिज्या (14) सेमी और केंद्र कोण ( \frac{5\pi}{7} ) रेडियन हो तो त्रिज्यखंड का क्षेत्रफल क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (70\pi) square cm(70\pi) वर्ग सेमी
Area is ( \frac{1}{2}r^2\theta=\frac{1}{2}\times196\times\frac{5\pi}{7}=70\pi ). Use this formula directly with a radian angle.क्षेत्रफल ( \frac{1}{2}r^2\theta=\frac{1}{2}\times196\times\frac{5\pi}{7}=70\pi ) है। रेडियन कोण के साथ यह सूत्र सीधे लगाएं।
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