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A sector of radius (18) cm has perimeter (48) cm. What is the central angle in degrees?त्रिज्या (18) सेमी वाले सेक्टर का परिमाप (48) सेमी है। केंद्र कोण डिग्री में क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (\frac{120}{\pi}^\circ)(\frac{120}{\pi}^\circ)
(36+18\theta=48), so (\theta=\frac{2}{3}) radians. In degrees, this is (\frac{2}{3}\times\frac{180}{\pi}=\frac{120}{\pi}^\circ).(36+18\theta=48), इसलिए (\theta=\frac{2}{3}) रेडियन है। डिग्री में यह (\frac{2}{3}\times\frac{180}{\pi}=\frac{120}{\pi}^\circ) है।
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